| ARCHAEOMETRIST | • archaeometrist n. A scientist whose speciality in archaeometry. • ARCHAEOMETRIST n. one who practises archaeometry. |
| AROMATHERAPIST | • aromatherapist n. (Alternative medicine) A practitioner of aromatherapy. • AROMATHERAPIST n. one who practises aromatherapy. |
| ASTROCHEMISTRY | • astrochemistry n. (Chemistry, astronomy) The study of the chemical composition of stars and outer space. • ASTROCHEMISTRY n. the study of molecules and radicals in outer space. |
| IATROCHEMISTRY | • iatrochemistry n. (Chemistry, medicine) An early branch of chemistry, having roots in alchemy, that tried to provide chemical… • IATROCHEMISTRY n. the application of chemistry to medical theory and treatment. |
| MOUTHBREATHERS | • mouthbreathers n. Plural of mouthbreather. • mouth-breathers n. Plural of mouth-breather an alternative spelling of mouth breather. • mouth␣breathers n. Plural of mouth breather. |
| PETROCHEMISTRY | • petrochemistry n. (Petrochemistry) The branch of chemistry that deals with petroleum, natural gas and their derivatives. • PETROCHEMISTRY n. the branch of chemistry concerned with the extraction of chemicals from petroleum. |
| STEPMOTHERLIER | • STEPMOTHERLY adj. like a stepmother. |
| TETARTOHEDRISM | • tetartohedrism n. (Crystallography) The property of being tetartohedral. • TETARTOHEDRISM n. the state of being tetartohedral, having one fourth the number of planes required by complete symmetry. |
| TETRADRACHMONS | • tetradrachmons n. Plural of tetradrachmon. |
| THERMOTROPISMS | • thermotropisms n. Plural of thermotropism. • THERMOTROPISM n. the growth of organism as influenced by heat. |
| TRICHROMATISMS | • trichromatisms n. Plural of trichromatism. • TRICHROMATISM n. use of the three primary colors for color reproduction; normal color vision. |
| TROPHOTROPISMS | • TROPHOTROPISM n. direction of growth by nutritional factors. |
| ULTRAMARATHONS | • ultramarathons n. Plural of ultramarathon. • ULTRAMARATHON n. a footrace longer than a marathon. |
| WEATHEROMETERS | • weatherometers n. Plural of weatherometer. • WEATHEROMETER n. an instrument for measuring weather-resisting properties of paint. |