Definition of pegmatoid in English:

pegmatoid

adjective

Geology
  • Resembling or similar in structure to pegmatite, but usually lacking a graphic appearance; consisting of a rock of this nature.

noun

Geology
  • A pegmatoid rock.

Origin

Late 19th century; earliest use found in American Naturalist. From pegmat- + -oid.

Pronunciation

pegmatoid

/ˈpɛɡmətɔɪd/