From Wiktionary, the free dictionary
From pre- + coronoid.
precoronoid (not comparable)
- In front of the coronoid
2015 September 11, “New Data on the Clevosaurus (Sphenodontia: Clevosauridae) from the Upper Triassic of Southern Brazil”, in PLOS ONE[1], →DOI:The tooth-bearing portion of the lower jaws are short so that the postcoronoid portion is longer than the precoronoid one.