| A | B |
|---|
| pachometer | device for measuring the thickness of an object |
| phototrophic | able to use light as a source of energy |
| pachytrichous | having thick hair |
| pachypodous | having large, thick feet |
| tautologize | to repeat the same thing (annoyingly) over and over |
| tautophonic | having a repetitious sound |
| tautochronous | at the same time |
| tautonym | having two names that are the same |
| petricide | the destruction of ancient buildings or monuments |
| petroglyph | a prehistoric carving in stone |
| petroleum | oil derived from deposits under the earth |
| petrified | changed into stone |
| iconoclast | one who attacks traditional ideas or sacred images |
| iconogenitor | the originator of an image |
| iconomancy | foretelling the future using images |
| iconograph | describing any subject by means of drawings or images |
| photocatalyst | a substance which in sunlight is utilized |
| photokinetic | responsive (moving around) when exposed to light |
| phototoxicity | abnormally sensitive to light (usually the skin) |
| pachycephalic | having a thick skull |
