proconcave
English
Etymology
pro- + concave.
Adjective
proconcave (not comparable)
- (malacology) In reference to ribs on shells, with the shape of a concave bend towards the aperture, but initially straight.
- 2016, Sreepat Jain, Fundamentals of Invertebrate Palaeontology: Macrofossils, pages 66-67:
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