| CHAMPIONSHIPS | • championships n. Plural of championship. • CHAMPIONSHIP n. the position of honour gained by being champion. |
| CHEMOSPHERES | • chemospheres n. Plural of chemosphere. • CHEMOSPHERE n. the thermosphere, the outermost layer of the atmosphere. |
| CHEMOTHERAPISTS | • chemotherapists n. Plural of chemotherapist. • CHEMOTHERAPIST n. one who practises chemotherapy. |
| CHROMATOSPHERES | • chromatospheres n. Plural of chromatosphere. • CHROMATOSPHERE n. a layer of incandescent gas surrounding the sun through which the light of the photosphere passes. |
| CHROMOSPHERES | • chromospheres n. Plural of chromosphere. • CHROMOSPHERE n. the region of the atmosphere of a star between the star's photosphere and its corona. |
| COCHAIRMANSHIPS | • COCHAIRMANSHIP n. joint chairmanship. |
| HYPOCHONDRIASMS | • HYPOCHONDRIASM n. hypochondria. |
| HYPSOCHROMES | • HYPSOCHROME n. a shift to a shorter wavelength in the absorption spectrum of a compound. |
| HYSTRICOMORPHS | • hystricomorphs n. Plural of hystricomorph. • HYSTRICOMORPH n. any rodent of a suborder which includes porcupines, cavies, agoutis, and chinchillas. |
| OPHTHALMOSCOPES | • ophthalmoscopes n. Plural of ophthalmoscope. • OPHTHALMOSCOPE n. an instrument for viewing the interior of the eye. |
| PHOTOCHEMISTS | • photochemists n. Plural of photochemist. • PHOTOCHEMIST n. a practitioner of photochemistry. |
| PHOTOCHROMISMS | • photochromisms n. Plural of photochromism. • PHOTOCHROMISM n. the property of changing color on exposure to light or other radiation and of reverting to original color immediately the light or radiation source is removed. |
| PHYSHARMONICAS | • PHYSHARMONICA n. an early form of harmonium. |
| PHYTOCHEMISTS | • phytochemists n. Plural of phytochemist. • PHYTOCHEMIST n. a chemist specialising in plant. |
| PSYCHOCHEMICALS | • psychochemicals n. Plural of psychochemical. • PSYCHOCHEMICAL n. a psychoactive chemical. |
| PSYCHOCHEMISTRY | • psychochemistry n. The study of the psychological effects of chemicals on the brain. • PSYCHOCHEMISTRY n. the treatment of mental illness by drugs. |
| PSYCHOMACHIAS | • psychomachias n. Plural of psychomachia. • PSYCHOMACHIA n. conflict of the soul. |
| PSYCHOMACHIES | • psychomachies n. Plural of psychomachy. • PSYCHOMACHY n. conflict of the soul. |
| SCAPHOCEPHALISM | • SCAPHOCEPHALISM n. the state of being scaphocephalic, having an abnormally long and narrow boat-shaped skull. |