Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of arachnid is as below...

Tant :: Tant (n.) A small scarlet arachnid.

Araneina :: Araneina (n. pl.) The order of Arachnida that includes the spiders.

Arachnidial :: Arachnidial (a.) Of or pertaining to the Arachnida.

Arthropoda :: Arthropoda (n. pl.) A large division of Articulata, embracing all those that have jointed legs. It includes Insects, Arachnida, Pychnogonida, and Crustacea..

Arachnidium :: Arachnidium (n.) The glandular organ in which the material for the web of spiders is secreted.

Chela :: Chela (n.) The pincherlike claw of Crustacea and Arachnida.

Arachnoidea :: Arachnoidea (n. pl.) Same as Arachnida.

Chelicera :: Chelicera (n.) One of the anterior pair of mouth organs, terminated by a pincherlike claw, in scorpions and allied Arachnida. They are homologous with the falcers of spiders, and probably with the mandibles of insects..

Arachnid :: Arachnid (n.) An arachnidan.

Arachnida :: Arachnida (n. pl.) One of the classes of Arthropoda. See Illustration in Appendix.

Hexapoda :: Hexapoda (n. pl.) The true, or six-legged, insects; insects other than myriapods and arachnids..

Trachearia :: Trachearia (n.pl.) A division of Arachnida including those that breathe only by means of tracheae. It includes the mites, ticks, false scorpions, and harvestmen..

Spiracle :: Spiracle (n.) One of the external openings communicating with the air tubes or tracheae of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. These openings are usually elliptical, and capable of being closed. See Illust. under Coleoptera..

Tardigrada :: Tardigrada (a.) An order of minute aquatic arachnids; -- called also bear animalcules, sloth animalcules, and water bears..

Spider :: Spider (n.) Any one of various other arachnids resembling the true spiders, especially certain mites, as the red spider (see under Red)..

Palpus :: Palpus (n.) A feeler; especially, one of the jointed sense organs attached to the mouth organs of insects, arachnids, crustaceans, and annelids; as, the mandibular palpi, maxillary palpi, and labial palpi. The palpi of male spiders serve as sexual organs. Called also palp. See Illust. of Arthrogastra and Orthoptera..

Pulmonarian :: Pulmonarian (n.) Any arachnid that breathes by lunglike organs, as the spiders and scorpions. Also used adjectively..

Arachnology :: Arachnology (n.) The department of zoology which treats of spiders and other Arachnida.

Pedipalpus :: Pedipalpus (n.) One of the second pair of mouth organs of arachnids. In some they are leglike, but in others, as the scorpion, they terminate in a claw..

Arachnidan :: Arachnidan (n.) One of the Arachnida.

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