| Phytolith | phytolith |
| Datolith | datolite |
| Otolith | otolith |
| Statolith | statolith |
| Phyllis | Phyllis |
| Physalis | cape gooseberry |
| Phytologie | phytology |
| Photolyse | photolysis |
| Aerolith | aerolite |
| Oolith | oolite |
| Regolith | regolith |
| Sepiolith | sepiolite |
| Biolith | biolith |
| Gastrolith | gastrolith stomach stone |
| Koprolith | coprolite fecaloma coprolith faecalith stercolith stercorolith |
| Monolith | monolith |
| Xenolith | xenolith |
| Zoolith | zoolite |
| Phykologie | phycology |
| Phylum | phylum |