Definition of microgranitoid in US English:

microgranitoid

adjective

Geology
rare
  • = microgranitic.

Origin

Early 20th century; earliest use found in Archibald Geikie (1835–1924), geologist and historian. From micro- + granitoid.

Pronunciation

microgranitoid

/ˌmʌɪkrə(ʊ)ˈɡranɪtɔɪd/