arachnid

noun arach·nid \ ə-ˈrak-nəd , -ˌnid \

Definition of arachnid

:any of a class (Arachnida) of arthropods comprising chiefly terrestrial invertebrates, including the spiders, scorpions, mites, and ticks, and having a segmented body divided into two regions of which the anterior bears four pairs of legs but no antennae

arachnid

adjective

Examples of arachnid in a Sentence

  1. Spiders, scorpions, mites, and ticks are arachnids.

Recent Examples of arachnid from the Web

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Did You Know?

The term arachnid refers to a class of animals that includes spiders, scorpions, mites, and ticks. Most arachnids have a segmented body divided into two regions, with the front part bearing four pairs of legs, but no antennae. They have a hard external skeleton and range in size from the mite, which is 0.003-in (0.08-mm) long, to the 8-in (21-cm) black scorpion of Africa. As arachnids grow, they molt, or shed their skin, several times. Arachnids are primarily carnivorous, but most are unable to digest food internally, instead they inject their prey with digestive fluids, then suck the liquefied remains. Arachnids are found worldwide in nearly every habitat. Some mites and ticks are parasitic and can carry diseases. Venomous spiders and scorpions also may pose a danger to humans, but most arachnids are harmless and prey only on insects.

First Known Use of arachnid

1826


ARACHNID Defined for English Language Learners

arachnid

noun

Definition of arachnid for English Language Learners

  • : a kind of animal that has eight legs and a body formed of two parts



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