轴颈的：由牙腔的轴壁与颈壁形成的- pyridoxic acid
- pyridoxine
- pyriform
- pyrilamine maleate
- pyrimethamine
- pyrimidine
- pyrinoline
- pyrithiamine
- pyro-
- pyr(o)-
- pyroborate
- pyroboric acid
- pyrocatechin
- pyrocatechol
- pyrodextrin
- pyrogallol
- pyrogen
- pyrogenetic
- pyrogenic
- pyrogenous
- pyroglobulin
- pyroglobulinemia
- pyroglutamase
- pyroglutamate
- pyroglutamate hydrolase