Definify.com
Webster 1913 Edition
Quadratojugal
Quad-raˊto-ju′gal
,Adj.
 (Anat.) 
(a) 
Of or pertaining to the quadrate and jugal bones. 
(b) 
Of or pertaining to the quadratojugal bone. 
– Noun.
 The quadratojugal bone.
 Quadratojugal bone 
(Anat.)
, a bone at the base of the lower jaw in many animals.
 Definition 2025
quadratojugal
quadratojugal
English
Adjective
quadratojugal (not comparable)
- (anatomy) Of or pertaining to the quadrate and jugal bones.
 - (anatomy) Of or pertaining to the quadratojugal bone.
 
Noun
quadratojugal (plural quadratojugals)
- (anatomy) A small jaw bone found in the skull of most reptiles, amphibians and birds.
 
References
- quadratojugal in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913