top·o·nym 
(tŏpə-nĭm′)
(tŏpə-nĭm′)n.
1. A place name.
2. A name derived from a place or region.
[Back-formation from TOPONYMY.]
top′o·nymic, top′o·nymi·cal adj.
- phosphane
- phosphatase
- phosphate
- phosphate rock
- phosphatic
- phosphatide
- phosphatidic
- phosphatidylcholine
- phosphatization
- phosphatize
- phosphaturia
- phosphaturic
- phosphene
- phosphide
- phosphine
- phosphite
- phospho-
- phosphocreatin
- phosphocreatine
- phosphodiesterase
- phosphodiester bond
- phospholipase
- phospholipid
- phosphonium
- phosphoprotein