arachnid

[ uh-rak-nid ]
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noun
  1. any wingless, carnivorous arthropod of the class Arachnida, including spiders, scorpions, mites, ticks, and daddy-longlegs, having a body divided into two parts, the cephalothorax and the abdomen, and having eight appendages and no antennae.: Compare insect.

adjective
  1. belonging or pertaining to the arachnids.

Origin of arachnid

1
1865–70; <New Latin Arachnida<Greek aráchn(ē) spider, spider's web + New Latin -ida-ida

Other words from arachnid

  • a·rach·ni·dan [uh-rak-ni-duhn], /əˈræk nɪ dən/, adjective, noun

Words Nearby arachnid

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British Dictionary definitions for arachnid

arachnid

/ (əˈræknɪd) /


noun
  1. any terrestrial chelicerate arthropod of the class Arachnida, characterized by simple eyes and four pairs of legs. The group includes the spiders, scorpions, ticks, mites, and harvestmen

Origin of arachnid

1
C19: from New Latin Arachnida, from Greek arakhnē spider

Derived forms of arachnid

  • arachnidan, adjective, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for arachnid

arachnid

[ ə-răknĭd ]


  1. Any of various arthropods of the class Arachnida, such as spiders, scorpions, mites, and ticks. Arthropods are characterized by four pairs of segmented legs and a body that is divided into two regions, the cephalothorax and the abdomen.

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