Late 19th century; earliest use found in Charles Darwin (1809–1882), naturalist, geologist, and originator of the theory of natural selection. From molluscoid + -al.
Definition of molluscoidal in US English:
molluscoidal
adjectiveˌmɒləsˈkɔɪdl
Zoology rare
Molluscoid.
Origin
Late 19th century; earliest use found in Charles Darwin (1809–1882), naturalist, geologist, and originator of the theory of natural selection. From molluscoid + -al.