| Name: | opercular flap |
|---|---|
| Synonyms: | gill cover, gill slit, opercular apparatus, opercular cover, operculum |
| Definition: | A large flap, covered by integument, supported by several flat bones, actuated by muscles, found on the side of the head covering the gill chambers. |
| Ontology: | Anatomy Ontology [ZFA:0000555] |
| Name: | ossification |
|---|---|
| Synonyms: | bone biosynthesis, bone formation, osteogenesis |
| Definition: | The formation of bone or of a bony substance, or the conversion of fibrous tissue or of cartilage into bone or a bony substance. |
| Ontology: | GO: Biological Process [GO:0001503] QuickGO AmiGO |