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Webster 1913 Edition
Gneissoid
Gneis′soid
(-soid)
, Adj.
[
Gneiss
+ -oid
.] Resembling gneiss; having some of the characteristics of gneiss; – applied to rocks of an intermediate character between granite and gneiss, or mica slate and gneiss.
Definition 2024
gneissoid
gneissoid
English
Adjective
gneissoid (comparative more gneissoid, superlative most gneissoid)
- (geology) Having a structure similar to that of gneiss, or intermediate between that of gneiss and mica or granite
Noun
gneissoid (plural gneissoids)
- (geology) A metamorphic rock having the composition of a laminated granite