[uh-rak-nid] /əˈræk nɪd/
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.
belonging or pertaining to the arachnids.
1865–70; < Neo-Latin Arachnida < Greek aráchn(ē) spider, spider's web + Neo-Latin -ida -ida
Related forms
[uh-rak-ni-duh n] /əˈræk nɪ dən/ (Show IPA),
adjective, noun
British Dictionary definitions for arachnidan
arachnid (əˈræknɪd)
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
[C19: from New Latin Arachnida, from Greek arakhnē spider]
adj, —n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin and History for arachnidan
1869, from Fr. arachnide (1806) or Mod.L. Arachnida, introduced as name for this class of arthropods 1815 by Fr. biologist Jean Baptiste Pierre Antoine de Monet de Lamarck (1744-1829), from Gk. arakhne "spider," which probably is cognate with L. aranea "spider, spider's web" (from aracsna).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
arachnidan in Science
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Tile value for arachnidan

Scrabble Words With Friends