pycnogonida Meaning, Definition & Usage

  1. noun sea spiders
    order Pycnogonida.

WordNet

Pyc`no*gon"i*da noun plural
Etymology
NL., fr. Gr. thick crowded + knee.
Definitions
  1. (Zoöl.) A class of marine arthropods in which the body is small and thin, and the eight legs usually very long; -- called also Pantopoda. ✍ The abdomen is rudimentary, and the triangular mouth is at the end of a tubular proboscis. Many of them live at great depths in the sea, and the largest of them measure two feet across the extended legs.

Webster 1913