eurystomatous

adjective
eu·ry·stom·a·tous | \ ¦yu̇rə̇¦stämətəs , -rē¦- , -tōm- \

Definition of eurystomatous 

zoology

: having a broad mouth : having the mouth dilatable

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History and Etymology for eurystomatous

probably from New Latin eurystomatus, from eury- + -stomatus -stomatous

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