Definition of planorbiform in English:

planorbiform

adjective

Zoology
  • Having the form of a snail of the genus Planorbis; of the shape of a rounded plane spiral.

Origin

Mid 19th century; earliest use found in Charles Lyell (1797–1875), geologist. From Planorbis + -iform.

Pronunciation

planorbiform

/pləˈnɔːbɪfɔːm/