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ganoin

American

[gan-oh-in] / ˈgæn oʊ ɪn /

Or ganoine

noun

Ichthyology.

a hard, shiny, enamellike substance secreted by the corium, composing the outer layer of the scales of certain fishes.

First recorded in 1855–60; gano(id) + -in ²

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023