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acrasin

[uh-krey-sin]
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noun Mycology.
  1. a chemotactic substance, identical with cAMP, secreted by myxamebas of cellular slime molds and attracting other myxamebas to aggregate and form a pseudoplasmodium.
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Origin of acrasin

1945–50; < New Latin Acras(iales) an order of cellular slime molds (Acras(is) a genus, so named from the lack of fusion between the cells (< Greek; see a-6, crasis) + -ales -ales) + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018