Teleostomi

plural noun

Tel·​e·​os·​to·​mi

: a class or sometimes a subclass that contains all existing jawed fishes except the Chondrichthyes or sometimes the Chondrichthyes and Choanichthyes, that is characterized by membrane bones developed in connection with and entering into the structure of the jaws, cranium, pectoral arch, and opercular apparatus, gill arches bearing filamentous gills, and no claspers on the ventral fins, and that includes the ganoids and teleosts and is further characterized by the hyostylic suspensorium, bony fin rays, and lack of cerebral hemispheres

teleostomian

¦⸗⸗⸗¦stōmēən

adjective

or teleostomic

¦⸗⸗⸗¦stämik

or teleostomous

¦⸗⸗¦ästəməs

Word History

Etymology

New Latin, from tele- entry 2 + -stomi

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now