Found in the following dictionaries
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
TWL06 (NASPA List 2006)
"Leucon" Definition
noun
A complex sponge structure in which chambers lined with choanocytes are connected by a network of canals.
Source: Wiktionary
The typical genus of the family leuconidæ.
Source: Century Dictionary
Any sponge belonging to the group leuconaria.
Source: Century Dictionary
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