thysanura

Thysanura

Thys`a*nu"ra\, n. pl. [NL., fr. Gr. ? fringe + ? tail.] (Zo["o]l.) An order of wingless hexapod insects which have setiform caudal appendages, either bent beneath the body to form a spring, or projecting as bristles. It comprises the Cinura, or bristletails, and the Collembola, or springtails. Called also Thysanoura. See Lepisma, and Podura.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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WordNet
thysanura

noun
firebrats; silverfish; machilids 
WordNet® 3.0, © 2006 by Princeton University.
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