Definition of morulation in English:

morulation

Pronunciation /ˌmɔːr(j)ʊˈleɪʃn/ /ˌmɒr(j)ʊˈleɪʃn/

noun

rare Embryology
  • The development of an ovum into a morula.

Origin

Late 19th century; earliest use found in The Century Dictionary. From morula + -ation.