authigenic

[ aw-thi-jen-ik ]
/ ˌɔ θɪˈdʒɛn ɪk /

adjective Geology.

(of a constituent of a rock) formed in the rock where it is found.Compare allogenic (def. 1).

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Origin of authigenic

1885–90; <German Authigen<Greek authigenḗs native to a specific place (aûthi there + -genēs born) + -ic; see genic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for authigenic

authigenic
/ (ˌɔːθɪˈdʒɛnɪk) /

adjective

(of minerals) having crystallized in a sediment during or after deposition

Word Origin for authigenic

C19: from German authigene from Greek authigenēs native + -ic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012