spider

play
noun spi·der \ˈspī-dər\
Updated on: 26 Jul 2017

Definition of spider

  1. 1a :  any of an order (Araneae synonym Araneida) of arachnids having a short, usually unsegmented abdomen linked to the cephalothorax by the pedicel, chelicerae modified into poison fangs, and two or more pairs of spinnerets at the posterior end of the abdomen for spinning threads of silk for various uses (as in making cocoons for their eggs or webs to catch prey) Spiders are further characterized by leglike pedipalps near the mouth, usually eight simple eyes, and book lungs or tracheae in the abdomen. b :  any of various other arthropods and especially arachnids that resemble the true spiders —not used technically

  2. 2 :  a cast-iron frying pan originally made with short feet to stand among coals on the hearth

  3. 3 :  any of various devices consisting of a frame or skeleton with radiating arms or members

spiderish

play \ˈspī-də-rish\ adjective

spiderlike

play \ˈspī-dər-ˌlīk\ adjective

Examples of spider in a Sentence

  1. We watched the spider spin its web.

Recent Examples of spider from the Web

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

Origin and Etymology of spider

Middle English spyder, alteration of spithre; akin to Old English spinnan to spin


Financial Definition of SPIDER

spider

What It Is

A spider (SPDR) is an exchange-traded fund (ETF) that tracks the Standard & Poor's 500 Index. SPDR stands for S&P Depository Receipts. However, the term can also refer to any ETF that tracks the S&P 500. The original SPDR ETF is managed by State Street Global Advisors.

How It Works

A SPDR is valued at one-tenth the S&P 500 Index and trades on the American Stock Exchange at about 10% of the dollar value level of the S&P 500. Each SPDR represents a unit of ownership in a trust that holds a portfolio of stocks that track the performance and dividend yield of an index.

SPDRs trade like stocks, and like stocks, they can be shorted, purchased on margin, and pay regular dividends.

Why It Matters

SPDRs are a way for investors and institutions to invest in the broad U.S. market and bet on its direction. Like most ETFs, SPDRs offer tax advantages over actual index mutual funds in that investors have more control over capital gains distributions.



SPIDER Defined for English Language Learners

spider

play
noun

Definition of spider for English Language Learners

  • : a small creature that has eight legs and usually creates a web of sticky threads in which it catches insects for food


SPIDER Defined for Kids

spider

play
noun spi·der \ˈspī-dər\

Definition of spider for Students

  1. 1 :  a wingless animal that is somewhat like an insect but has eight legs instead of six and a body divided into two parts instead of three and that often spins threads of silk into webs for catching prey

  2. 2 :  a cast-iron frying pan


Medical Dictionary

spider

play
noun spi·der \ˈspīd-ər\

Medical Definition of spider

  1. 1:  any of an order (Araneae synonym Araneida) of arachnids having a body with two main divisions, four pairs of walking legs, and two or more pairs of abdominal spinnerets for spinning threads of silk used especially in making webs for catching prey

  2. 2:  spider nevus an arterial spider

  3. 3:  an obstruction in the teat of a cow; especially :  a small irregular horny growth resulting from irritation or bruising



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