| thysanura | <zoology> 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. Origin: NL, fr. Gr. Fringe + tail. Source: Websters Dictionary (01 Mar 1998) |
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| thysanuran | <zoology> One of the Thysanura. Also used adjectively. Source: Websters Dictionary (01 Mar 1998) |