| EPIPHYTOLOGY | • epiphytology n. Study of epiphytes and their ecology. • EPIPHYTOLOGY n. the study of epiphytes. |
| HIPPOLOGISTS | • hippologists n. Plural of hippologist. • HIPPOLOGIST n. a student of horses. |
| OLIGOPEPTIDE | • oligopeptide n. (Biochemistry) A peptide containing a relatively small number of amino acids. • OLIGOPEPTIDE n. a peptide comprising less than ten amino acids. |
| OVERPEOPLING | • overpeopling v. Present participle of overpeople. • OVERPEOPLE v. to people too densely. |
| PAPYROLOGIES | • papyrologies n. Plural of papyrology. • PAPYROLOGY n. the study of paper. |
| PAPYROLOGIST | • papyrologist n. A student of papyrology, the study of ancient writings on papyrus. • PAPYROLOGIST n. a student of papyrology. |
| PHOTOGLYPHIC | • photoglyphic adj. Relating to the art of engraving by the action of light. • PHOTOGLYPHIC adj. of or like a photoglyph, photographic engraving. |
| PLAGIOTROPIC | • plagiotropic adj. (Botany) Growing at an oblique or almost horizontal angle. • PLAGIOTROPIC adj. of a plant, growing away from the vertical. |
| POLAROGRAPHS | • polarographs n. Plural of polarograph. • POLAROGRAPH n. an apparatus for automatic chemical analysis in which a sample solution is electrolysed at successively higher voltages and the resulting current plotted against voltage. |
| POLAROGRAPHY | • polarography n. (Chemistry) An electrochemical technique for the analysis of redox reactions. • POLAROGRAPHY n. a technique for determining the concentration and nature of the ions in a solution by an electrolytic process. |
| POMPHOLYGOUS | • POMPHOLYGOUS adj. of or like a pompholyx, a vesicular eruption or eczema chiefly on the palms and soles. |
| PSEPHOLOGIES | • PSEPHOLOGY n. the study of political elections. |
| PSEPHOLOGIST | • psephologist n. An expert in psephology. • PSEPHOLOGIST n. one who studies election results and trends. |