Definition of abdominal rib in English:

abdominal rib

noun

Zoology Palaeontology
  • Any of the rib-like dermal bones in the abdominal wall of certain extant and fossil reptiles and related vertebrates.

Origin

Early 19th century; earliest use found in James Parkinson (1755–1824), surgeon and palaeontologist. After French fausse côte abdominale.