Source : Webster's Revised Unabridged Dictionary (1913)

Pycnogonid \Pyc*nog"o*nid\, n. (Zo["o]l.)
   One of the Pycnogonida.

Source : WordNet®

pycnogonid
     n : any of various small spider-like marine arthropods having
         small thin bodies and long slender legs [syn: {sea spider}]