os·si·fy 
(ŏsə-fī′)
(ŏsə-fī′)v. os·si·fied, os·si·fy·ing, os·si·fies
v.intr.
1. To change into bone; become bony.
2. To become set in a rigidly conventional pattern: "The central ideas of liberalism have ossified" (Jeffrey Hart).
v.tr.
1. To convert (a membrane or cartilage, for example) into bone.
2. To mold into a rigidly conventional pattern.
[Latin os, oss-, bone; see ost- in the Appendix of Indo-European roots + -FY.]
os·sific (ŏ-sĭfĭk) adj.
- southwardly
- southwards
- southwest
- South-West Africa.
- South-West Africa
- southwest by south
- southwest by west
- southwester
- southwesterly
- southwestern
- southwestward
- southwestwardly
- southwestwards
- South Yemen
- souvenir
- souvlaki
- sou'wester
- sou'wester
- sovereign
- sovereignly
- sovereignty
- soviet
- sovietization
- sovietize
- Sovietologist