security

noun
se·​cu·​ri·​ty | \si-ˈkyu̇r-ə-tē, -ˈkyər-\
plural securities

Definition of security 

1 : the quality or state of being secure: such as

a : freedom from danger : safety

b : freedom from fear or anxiety

c : freedom from the prospect of being laid off job security

2a : something given, deposited, or pledged to make certain the fulfillment of an obligation

b : surety

3 : an instrument of investment in the form of a document (such as a stock certificate or bond) providing evidence of its ownership

4a : something that secures : protection

b(1) : measures taken to guard against espionage or sabotage, crime, attack, or escape

(2) : an organization or department whose task is security

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Examples of security in a Sentence

We must insure our national security. The college failed to provide adequate security on campus after dark. There was a lapse in security and the inmates escaped. We have to go through security at the airport. We called security when we found the door open. The meeting was held under tight security. The prisoner was being kept under maximum security. I like the security of knowing there will be someone there to help me when I need help. Growing up in a close family gave her a sense of security.
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Recent Examples on the Web

But when the meeting finally happened, the security team was not notified. Recode Staff, Recode, "Recode Daily: Facebook’s Sheryl Sandberg asked for George Soros research," 30 Nov. 2018 Google management seems committed to expanding its offerings in China — often even looping out the company’s own security team, as an Intercept report revealed today. Russell Brandom, The Verge, "How Googlers organized against the company’s China plans," 30 Nov. 2018 Trump’s call for a troop withdrawal bucks the advice of his top national security team. Andrew O'reilly, Fox News, "White House: US mission in Syria coming to 'rapid end'," 2 Oct. 2018 Like most bodyguards of very famous people, the royal family's security team speak in ~code~ to throw crazed fans and crazed assassins off the scent. Kayleigh Roberts, Marie Claire, "These Are the Secret Code Names Bodyguards Use for Prince Harry, Meghan Meghan Markle, Prince William, and Kate Middleton," 16 Sep. 2018 These include people detection and facial recognition for tasks like building surveillance, retail analytics, and home security. James Vincent, The Verge, "Apple reportedly buys AI startup with privacy-conscious approach," 21 Nov. 2018 According to the Times, a company expert on Russian cyberwarfare alerted former chief security officer Alex Stamos in spring 2016 that hackers were using the platform to search for people connected to the presidential campaigns. Allysia Finley, WSJ, "Will Facebook’s Grownups Please Stand Up," 21 Nov. 2018 But even if the ends seemed indisputably good, not every security-watcher believes in the means. Sean Gallagher, Ars Technica, "The Snowden Legacy, part one: What’s changed, really?," 21 Nov. 2018 That was a central argument for the U.S. and governments in Europe and elsewhere who lobbied against Russian security service veteran Prokopchuk. Angela Charlton, The Seattle Times, "Interpol’s flaws exposed in US-Russia fight over presidency," 21 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'security.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of security

15th century, in the meaning defined at sense 1

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Statistics for security

Last Updated

11 Dec 2018

Look-up Popularity

Time Traveler for security

The first known use of security was in the 15th century

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More Definitions for security

fixed-income security

noun

Financial Definition of fixed-income security

What It Is

A fixed income security is an investment that pays regular income in the form of a coupon payment, interest payment or preferred dividend.

How It Works

Fixed income securities provide periodic income payments at an interest or dividend rate known in advance by the holder. The most common fixed-income securities include Treasury bonds, corporate bonds, certificates of deposit (CDs) and preferred stock.

Holders of Treasury bonds and CDs receive a fixed interest rate based on a par value over a specific period of time. Holders of preferred stock are entitled to a periodic fixed dividend specified by the issuing company for as long as they own the shares.

To illustrate, suppose an investor owns a Treasury bond with a par value of $1,000 and an annual yield of 6%. This investor is guaranteed a payment of $60 each year for the life of the bond. Similarly, an investor who holds preferred stock in Company XYZ might be promised a quarterly dividend payment of $5 per share, which he can dependably receive for as long as he holds the shares.

Why It Matters

Fixed income securities are an excellent choice for risk-averse investors seeking a stable source of income payments at predictable intervals. Fixed income investors and prospective investors should understand that the relatively low risk of fixed income securities generally translates into relatively lower returns.

Source: Investing Answers

hybrid security

noun

Financial Definition of hybrid security

What It Is

A hybrid security is a security that has characteristics of one or more asset classes.

How It Works

For example, a convertible bond is a hybrid security because it is a bond that allows the holder to exchange the bond for other securities (usually the issuer's stock). Mechanically, convertible bonds let the holder use the par value of the bond to purchase other securities from the issuer at a specified price.

For example, consider a Company XYZ bond with a $1,000 par value that is convertible into Company XYZ common stock. If the conversion price of the common shares is $25, then the bondholder can convert each of his or her bonds into 40 Company XYZ shares ($1,000 / $25 = 40). In this scenario, we would say that the conversion ratio is 40:1. Many hybrid securities are callable, meaning that under certain circumstances the issuer can redeem them before they mature.

Why It Matters

Hybrid securities require their investors to conduct extra analyses. For instance, the conversion price is not the only aspect of a convertible bond to analyze. Like other bonds, convertible bonds usually offer a coupon, and their prices are based on prevailing market rates and the credit quality of the issuer. Because conversion would mean losing those interest payments, investors also compare the coupon payment of the bond to the dividend yield of the common shares when they're thinking of converting.

Another thing to consider when investing in hybrid securities is their trading behavior. For instance, the more a convertible bond is "in the money," that is, the more the market value of the shares exceeds the conversion price, the more the bond itself trades like a stock. The bond's price tends to rise as the stock price approaches the conversion price (similar to a call option). The more volatile the stock price when in this zone, the more volatile the bond price. Interestingly, this relationship allows convertible bondholders to participate in the company's stock price appreciation.

Source: Investing Answers

security

noun

English Language Learners Definition of security

: the state of being protected or safe from harm

: things done to make people or places safe

: the area in a place (such as an airport) where people are checked to make sure they are not carrying weapons or other illegal materials

security

noun
se·​cu·​ri·​ty | \si-ˈkyu̇r-ə-tē \
plural securities

Kids Definition of security

1 : the state of being safe : safety national security

2 : freedom from worry or anxiety financial security

3 : something given as a pledge of payment He gave security for a loan.

4 : something (as a stock certificate) that is evidence of debt or ownership

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security

noun
se·​cu·​ri·​ty | \si-ˈkyu̇r-ət-ē \
plural securities

Medical Definition of security 

: freedom from fear or anxiety need for security dates back into infancy— K. C. Garrison

security

noun
se·​cur·​i·​ty | \si-ˈkyu̇r-ə-tē \
plural securities

Legal Definition of security 

1a : something (as a mortgage or collateral) that is provided to make certain the fulfillment of an obligation used his property as security for a loan

b : surety — see also security for costs

2 : evidence of indebtedness, ownership, or the right to ownership specifically : evidence of investment in a common enterprise (as a corporation or partnership) made with the expectation of deriving a profit solely from the efforts of others who acquire control over the funds invested a security involves some form of investment contract — see also due diligence

asset-backed security

: a security (as a bond) that represents ownership in or is secured by a pool of assets (as loans or receivables) that have been securitized

bearer security

: a security (as a bearer bond) that is not registered and is payable to anyone in possession of it

certificated security \sər-​ˈti-​fə-​ˌkā-​təd-​ \

: a security that belongs to or is divisible into a class or series of shares, participations, interests, or obligations, is a commonly recognized medium of investment, and is represented on an instrument payable to the bearer or a specified person or on an instrument registered on books by or on behalf of the issuer

convertible security

: a security (as a share of preferred stock) that the owner has the right to convert into a share or obligation of another class or series (as common stock)

debt security

: a security (as a bond) serving as evidence of the indebtedness of the issuer (as a government or corporation) to the owner

equity security

: a security (as a share of stock) serving as evidence of an ownership interest in the issuer also : one convertible to or serving as evidence of a right to purchase, sell, or subscribe to such a security

exempted security

: a security (as a government bond) exempt from particular requirements of the Securities and Exchange Commission (as those relating to registration on a security exchange)

fixed-income security

: a security (as a bond) that provides a fixed rate of return on an investment (as because of a fixed interest rate or dividend)

government security

: a security (as a Treasury bill) that is issued by a government, a government agency, or a corporation in which a government has a direct or indirect interest

hybrid security

: a security with characteristics of both an equity security and a debt security

mortgage-backed security

: a security that represents ownership in or is secured by a pool of mortgage obligations specifically : a pass-through security based on mortgage obligations

pass-through security

: a security representing an ownership interest in a pool of debt obligations from which payments of interest and principal pass from the debtor through an intermediary (as a bank) to the investor especially : one based on a pool of mortgage obligations guaranteed by a federal government agency — compare collateralized mortgage obligation, remic

registered security

1 : a security (as a registered bond) whose owner is registered on the books of the issuer

2 : a security that is to be offered for sale and for which a registration statement has been submitted

restricted security

: a security accompanied by restrictions on its free transfer or registration of transfer

shelf security

: a corporate security held for deferred issue in a shelf registration

Treasury security

: a security issued by a government treasury : treasury sense 3

uncertificated security \ˌən-​sər-​ˈti-​fə-​ˌkā-​təd-​ \

: a security that belongs to or is divisible into a class or series of shares, participations, interests, or obligations, that is a commonly recognized medium of investment, that is not represented by an instrument, and the transfer of which is registered on books by or on behalf of the issuer

unregistered security

: a security for which a registration statement has not been filed

when-issued security

: a security traded on a conditional basis prior to its issue

3a : measures taken to guard against espionage or sabotage, crime, attack, or escape

b : an organization or department whose task is security

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Comments on security

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