Definition of geosynclinal in English:

geosynclinal

noun

Geology
  • Geosyncline. Now rare.

adjective

Geology
  • Of, relating to, or of the nature of a geosyncline.

Origin

Late 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. As noun from geo- + synclinal; compare geanticlinal. As adjective from geo- + synclinal; compare geanticlinal.

Pronunciation

geosynclinal

/ˌdʒiːə(ʊ)sɪŋˈklʌɪnl/