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Definition of Arachnida
1. Noun. A large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings.
Group relationships: Chelicerata, Superclass Chelicerata
Member holonyms: Arachnid, Arachnoid, Opiliones, Order Opiliones, Order Phalangida, Phalangida, Order Scorpionida, Scorpionida, Chelonethida, Order Chelonethida, Order Pseudoscorpiones, Order Pseudoscorpionida, Pseudoscorpiones, Pseudoscorpionida, Order Pedipalpi, Order Uropygi, Pedipalpi, Uropygi, Araneae, Araneida, Order Araneae, Order Araneida, Acarina, Order Acarina
Generic synonyms: Class
Derivative terms: Arachnidian
Definition of Arachnida
1. n. pl. One of the classes of Arthropoda. See Illustration in Appendix.
Medical Definition of Arachnida
1.
Lexicographical Neighbors of Arachnida
Literary usage of Arachnida
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Spider Book: A Manual for the Study of the Spiders and Their Near by John Henry Comstock (1912)
"We can say, therefore, that in the arachnida the first pair of antennae are ...
Most arachnida differ from all other air-breathing arthropods in having the ..."
2. Philosophical Transactions of the Royal Society of London by Royal Society (Great Britain) (1843)
"Secondly, to demonstrate the existence of a complete system of circulatory vessels
in the Myriapoda and arachnida. Thirdly, to show the identity of the laws ..."
3. Text-book of the Embryology of Invertebrates by Eugen Korschelt, Karl Heider, Edward Laurens Mark, William McMichael Woodworth, Matilda Bernard, Martin Fountain Woodward (1899)
"The fusion of segments which often takes place among the arachnida is of ...
The arachnida have only two pairs of cephalic limbs (the chelicerae and the ..."
4. International Catalogue of Scientific Literature by Royal Society (Great Britain) (1906)
"arachnida of the expedition. [Reprinted from Washington, DC, Proc. Acad. ...
The arachnida of Florida. California. 6. Some arachnida from1 /' CENTRAL AND ..."
5. On Animal and Vegetable Parasites of the Human Body: A Manual of Their by Friedrich Küchenmeister (1857)
"They are wanting in the arachnida and Insects. /. In the higher species, ...
In detail the arachnida consist of the following parts: 1. ..."
6. Natural History: A Manual of Zoölogy for Schools, Colleges, and the General by Sanborn Tenney (1869)
"THE ORDER OF arachnida, OR SPIDERS. THIS Order embraces insects which have the
... The Tracheary arachnida perform their respiration by means of tracheae, ..."
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