Definition of monochorionic in English:

monochorionic

Pronunciation /ˌmɒnə(ʊ)ˌkɔːrɪˈɒnɪk/

adjective

Medicine
  • Having or sharing a single chorion.

Origin

Early 20th century; earliest use found in George Gould (1848–1922). From mono- + chorionic.