arachnid

noun
arach·​nid | \ ə-ˈrak-nəd How to pronounce arachnid (audio) , -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

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Other Words from arachnid

arachnid adjective

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.

Examples of arachnid in a Sentence

Spiders, scorpions, mites, and ticks are arachnids.

Recent Examples on the Web

In addition, a warmer climate is more favorable for disease-carrying insects and arachnids. al.com, "Secret government tick experiment created Lyme disease, congressman claims," 18 July 2019 On a recent Monday, at the state capitol, in Albany, Senator Sue Serino bit into a lime wedge while standing next to an enormous bloodsucking arachnid. Micah Hauser, The New Yorker, "Tickbusters on the Lookout for Lyme," 22 July 2019 Keizer Fire District Chief Jeff Cowan says the arachnids were confirmed to be Pacific Northwest forest scorpions, a species native to the Willamette Valley. USA TODAY, "Barbie, Tupac, scorpions and Red Vines: News from around our 50 states," 19 July 2019 Members of Keizer’s fire department got up close to the arachnids Wednesday when someone dropped off four live scorpions at the station. oregonlive.com, "Live scorpions found in container at Keizer park, dropped off at fire station for ‘safety’," 17 July 2019 Much as an arachnid bite changed Peter Parker into Spider-Man, that crocodile chomp transformed Brandon Hatfield into Florida Man. Author: Logan Hill, Anchorage Daily News, "Is it OK to laugh at Florida Man?," 16 July 2019 At least these water-loving arachnids don’t eat entire possums. Kelli Bender, PEOPLE.com, "Here's Your Friendly Video Reminder that Tarantula Spiders Know How to Swim," 21 June 2019 The Demogorgon also doesn't have a sleek, shark-like appearance — or an arachnid one like the Mind Flayer. Marisa Lascala, Good Housekeeping, "So, What Is a 'Mind Flayer,' Exactly? Decoding the Monsters of 'Stranger Things'," 5 July 2019 In this boss battle, the robo-arachnid activated various shield effects and healing fields, which Cloud and Barret had to take down one at a time by focusing on weak points, using proper elemental attacks, and distracting the Sentinel. Sam Machkovech, Ars Technica, "Final Fantasy VII Remake headlines Square Enix E3 event, gets March 2020 launch," 11 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arachnid.' 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 arachnid

1826, in the meaning defined above

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More Definitions for arachnid

arachnid

noun

English Language Learners Definition of arachnid

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

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