Search Result for "invertebrate": 
Wordnet 3.0

NOUN (1)

1. any animal lacking a backbone or notochord; the term is not used as a scientific classification;


ADJECTIVE (1)

1. lacking a backbone or spinal column;
- Example: "worms are an example of invertebrate animals"
[syn: invertebrate, spineless]



The Collaborative International Dictionary of English v.0.48:

Invertebrate \In*ver"te*brate\, a. (Zool.)
   Destitute of a backbone; having no vertebr[ae]; of or
   pertaining to the Invertebrata. -- n. One of the
   Invertebrata.
   [1913 Webster]

   Age of invertebrates. See Age, and Silurian.
      [1913 Webster]


WordNet (r) 3.0 (2006):

invertebrate
    adj 1: lacking a backbone or spinal column; "worms are an
           example of invertebrate animals" [syn: invertebrate,
           spineless] [ant: vertebrate]
    n 1: any animal lacking a backbone or notochord; the term is not
         used as a scientific classification