From Wiktionary, the free dictionary
From pro- + lateral.
prolateral (not comparable)
- Projecting from a forward-facing side
2015 August 6, “New Fossil Scorpion from the Chiapas Amber Lagerstätte”, in PLOS ONE[1], →DOI:Leg tibial spur absent, prolateral pedal spur reduced, retrolateral pedal spur moderate.