Definition of acephalan in English:

acephalan

adjective

Zoology
rare
  • Of the former invertebrate class Acephala; designating or relating to this class.

Origin

Mid 19th century (in an earlier sense). From Acephala + -an. With the use as adjective compare earlier acephalous.

Pronunciation:

acephalan

/(ˌ)eɪˈsɛf(ə)lən//(ˌ)eɪˈsɛfələn//(ˌ)eɪˈkɛfələn/