Gneissoid

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun

1
A metamorphic rock having the composition of a laminated granite

Adjective

1
Having a structure similar to that of gneiss, or intermediate between that of gneiss and mica or granite

Etymology

From gneiss + -oid.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.