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Webster 1913 Edition
Pycnogonida
‖
Pycˊno-gon′i-da
,Noun.
pl.
[NL., fr. Gr. [GREEK] thick crowded + [GREEK] knee.]
(Zool.)
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.