mil·lionth 
(mĭlyənth)
(mĭlyənth)n.
1. The ordinal number matching the number million in a series.
2. One of a million equal parts.
millionth adv. & 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