| Word | Definitions | Synonyms |
|---|---|---|
| porphyria | (noun) a genetic abnormality of metabolism causing abdominal pains and mental confusion | - |
| porphyrin | (noun) any of various pigments distributed widely in living tissues | - |
| porphyry | (noun) any igneous rock with crystals embedded in a finer groundmass of minerals | Synonyms: porphyritic rock |
| porpoise | (noun) any of several small gregarious cetacean mammals having a blunt snout and many teeth | - |