[1] : The Collaborative International Dictionary of English v.0.48

tardigrade \tar"digrade\, n. zool.
   one of the tardigrada.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

tardigrade \tar"digrade\, a. l. tardigradus; tardus slow +
   gradi to step: cf. f. tardigrade.
   1. moving or stepping slowly; slow-paced. r. --g. eliot.
      1913 webster

   2. zool. of or pertaining to the tardigrada.
      1913 webster

[3] : WordNet (r) 2.0

tardigrade
     n : an arthropod of the division tardigrada

Tardigrade >> T Words
Tardigrade, definition of term: Tardigrade
tardigrade_pag1.html