arachnid

[ uh-rak-nid ]
/ əˈræk nɪd /
SEE SYNONYMS FOR arachnid ON THESAURUS.COM

noun

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

belonging or pertaining to the arachnids.

Origin of arachnid

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-duh n] /əˈræk nɪ dən/, adjective, noun

Words nearby arachnid

arachidic, arachidic acid, arachidonic acid, arachis oil, arachne, arachnid, arachnida, arachnidism, arachnodactyly, arachnoid, arachnoid cyst

Words related to arachnid

tick, mite, tarantula, scorpion, harvestman

Example sentences from the Web for arachnid

British Dictionary definitions for arachnid

arachnid
/ (əˈræknɪd) /

noun

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

Derived forms of arachnid

arachnidan, adjective, noun

Word Origin for arachnid

C19: from New Latin Arachnida, from Greek arakhnē spider

Scientific definitions for arachnid

arachnid
[ ə-răk′nĭd ]

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.