• Webster's Revised Unabridged Dictionary
    • n. pl Sycones (Zoöl) A division of calcareous sponges.☞ They usually resemble a fig, being vase-shaped with a fringed opening at the summit. The feeding cells are in ampullæ connected with radial tubes in the thickened walls of the body.
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Century Dictionary and Cyclopedia
    • sycones One of the divisions of the Calcispongiæ or chalk-sponges, represented by forms which are essentially compound Ascones. See this word and Leucones.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. a fig