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rudaceous

/ruːˈdeɪʃəs/
adjective
1.
(of conglomerate, breccia, and similar rocks) composed of coarse-grained material Compare arenaceous (sense 1), argillaceous
Word Origin
C20: from Latin rudis coarse, rough + -aceous
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Contemporary definitions for rudaceous
adjective

pertaining to coarse-grained (grain size 2mm or more) sedimentary rock

Usage Note

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