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(Zoology) ichthyol the enamel-like substance that forms the outer layer of the scales of certain fish
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||ganoin - shiny substance that resemble enamel and is secreted by the corium of certain fishes (especially ganoid fishes) and composes the outer layer of their scales|
secretion - a functionally specialized substance (especially one that is not a waste) released from a gland or cell
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