falcoid

English

Etymology

Latin falx (“sickle”) +‎ -oid (“like”).

Adjective

falcoid (not comparable)

1. (malacology) In reference to ribs on shells, in the shape of a wave but initially straight, spoon shaped.
   • 2016, Sreepat Jain, Fundamentals of Invertebrate Palaeontology: Macrofossils‎^[1], pages 66–67:

     Falcoid: The ribs form a clear wave with no or a weak wave through