'actinocrinidae' originates from Greek, specifically the word 'aktinos' meaning 'ray' and 'krinon' meaning 'lily', referring to the ray-like arms of the crinoids.

'Actinocrinidae' was used in scientific classification to describe a family of crinoids, evolving from the Greek terms to the modern scientific nomenclature.

Initially, it referred to the ray-like structure of the crinoids, and this meaning has remained consistent in scientific contexts.