protocontinent

/proh-toh-kon-tn-uhnt/US // ˌproʊ toʊˈkɒn tn ənt //

原大陆,原生大陆,原始大陆,原生宙

Definitions

n.名词 noun

1
Geology.
- : an actual or hypothetical landmass that might later be enlarged into a major continent or broken up into smaller ones.