Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Pleon" Definition
noun
In botany, a term proposed by Nägeli for those aggregates of molecules which cannot be increased or diminished in size without changing their chemical nature, as distinguished from micellæ, or aggregates that can be so increased or diminished. See micella.
Source: Century Dictionary
In Crustacea, the abdomen: distinguished from cephalon (head) and pereion (thorax).
Source: Century Dictionary
The tail-spine or telson of some crustaceans, as the king-crab: so named by Owen, on the supposition that it represents the abdomen: correlated with thoracetron and cephaletron.
Source: Century Dictionary
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