• Webster's Revised Unabridged Dictionary
    • n Scaphognathite (Zoöl) A thin leafike appendage (the exopodite) of the second maxilla of decapod crustaceans. It serves as a pumping organ to draw the water through the gill cavity.
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Century Dictionary and Cyclopedia
    • n scaphognathite In Crustacea, an appendage of the second maxilla, apparently representing a combined epipodite and exopodite. In the crawfish it forms a broadly oval plate or scaphoid organ, which continually bales the water out of the respiratory chamber, and so lets fresh water in. See cut at Podophthalmia (C, cd).
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Webster's Revised Unabridged Dictionary
Gr. ska`fh boat + gna`qos jaw