Langimage
English

heterognathic

|he-te-ro-gnath-ic|

C2

/ˌhɛtərəˈnæθɪk/

different jaws

Etymology
Etymology Information

'heterognathic' originates from Greek, specifically the elements 'hetero-' and 'gnathos', where 'hetero-' meant 'different' and 'gnathos' meant 'jaw'.

Historical Evolution

'heterognathic' was formed in New Latin/modern scientific English from the Greek elements 'hetero-' + 'gnathos' and entered English usage as a technical adjective in zoological and anatomical contexts.

Meaning Changes

Initially it meant 'different jaw(s)' in a literal anatomical sense, and over time this core anatomical meaning has been retained in modern scientific usage.

Meanings by Part of Speech

Adjective 1

having dissimilar or differently formed jaws; in zoology, describing organisms whose upper and lower jaws differ in structure or form.

Many predatory fishes are heterognathic, with an upper jaw specialized for grasping and a lower jaw adapted for crushing.

Synonyms

heterognathousdifferent-jawed

Antonyms

isognathichomognathic

Last updated: 2025/12/07 10:28