1

x

play
noun, often capitalized, often attributive \ ˈeks \
Updated on: 26 Jul 2017

Definition of x

plural x's or xs play \ˈek-səz\
1 a :the 24th letter of the English alphabet
b :a graphic representation of this letter
c :a speech counterpart of orthographic x
2 :ten — see Table of Numbers
3 :a graphic device for reproducing the letter x
4 :one designated x especially as the 24th in order or class, or the first in an order or class that includes x, y, and sometimes z
5 :an unknown quantity
6 :something shaped like or marked with the letter X

Examples of x in a Sentence

  1. a word that starts with an x

  2. a word that starts with x

First Known Use of x

before 12th century


2

x

verb

Definition of x

x-ed also x'd or xed play \ˈekst\; x-ing or x'ing play \ˈek-siŋ\
transitive verb
1 :to mark with an x
2 :to cancel or obliterate with a series of x's usually used with out
  • x-ed out the mistake

First Known Use of x

circa 1849


3

x

abbreviation

Definition of x

1 cross
2 ex
3 experimental
4 extra

X

play
adjective \ ˈeks \

Definition of X

of a motion picture
:of such a nature that admission is denied to persons under a specified age (such as 17) used before the adoption of NC-17

First Known Use of x

1970


Financial Definition of X

x

What It Is

X is an extension to a ticker symbol. It denotes that the security is a mutual fund.

How It Works

For example, Vanguard offers a variety of mutual funds. The tickers end in X.

Why It Matters

Many companies have several different types of securities listed. Extensions help investors understand which securities are which.



X Defined for English Language Learners

noun

Definition of x for English Language Learners

  • : the 24th letter of the English alphabet

  • : the Roman numeral that means 10

  • mathematics —used to represent an unknown quantity


X Defined for Kids

x

play
noun, often capitalized \ ˈeks \

Definition of x for Students

plural x's or xs \ˈek-səz\
1 :the 24th letter of the English alphabet
2 :ten in Roman numerals
3 :an unknown quantity What is the value of x in the equation x + 2 = 6?

Medical Dictionary

x

play
noun \ ˈeks \

medical Definition of x

plural x's or xs or x'es or xes play \ˈek-səz\
:the basic or monoploid number of chromosomes of a polyploid series :the number contained in a single genome — compare n 1

x

symbol

medical Definition of x

1 capitalized halogen atom used in general formulas (as of trihalomethane CHX3)
2 power of magnification

Law Dictionary

1

x

play
noun, often capitalized \ ˈeks \

legal Definition of x

1 :a mark used in place of a signature when the maker is incapable of signing his or her name (as because of illiteracy or a physical ailment)
2 :a mark used in indicating a choice or applicable item (as on an insurance form)

2

x

abbreviation

legal Definition of x

1 ex-distribution
2 ex-dividend
3 ex-rights
4 ex-warrants


Seen and Heard

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