| DYSMENORRHOEA | • dysmenorrhoea n. Alternative spelling of dysmenorrhea. • dysmenorrhœa n. Obsolete form of dysmenorrhea. • DYSMENORRHOEA n. painful menstruation, also DYSMENORRHEA. |
| HETEROKARYONS | • heterokaryons n. Plural of heterokaryon. • HETEROKARYON n. a cell, as in the mycelium of a fungus, that contains two or more genetically unlike nuclei. |
| HYDROGENATORS | • hydrogenators n. Plural of hydrogenator. • HYDROGENATOR n. an agent that hydrogenates. |
| HYDROQUINONES | • hydroquinones n. Plural of hydroquinone. • HYDROQUINONE n. another name for quinol. |
| HYMENOPTERONS | • hymenopterons n. Plural of hymenopteron. • HYMENOPTERON n. an order of insect having four membranous wings, e.g. ants, bees, wasps, also HYMENOPTERAN. |
| HYMENOPTEROUS | • hymenopterous adj. (Entomology) Of the order Hymenoptera; hymenopteran. • HYMENOPTEROUS adj. having four membranous wings, as do ants, bees and wasps. |
| HYPERBOLAEONS | • HYPERBOLAEON n. a term in in Greek prosody. |
| NARCOHYPNOSES | • NARCOHYPNOSIS n. the use of narcotics to produce hypnosis. |
| PHARYNGOSCOPE | • pharyngoscope n. An instrument used to examine the pharynx. • PHARYNGOSCOPE n. an instrument for inspecting the pharynx. |
| PHYTOESTROGEN | • phytoestrogen n. (Biochemistry) A substance found in certain plants (such as genistein) which can produce effects like… • PHYTOESTROGEN n. a plant substance similar to a weak oestrogen. |
| PHYTOHORMONES | • phytohormones n. Plural of phytohormone. • PHYTOHORMONE n. a plant hormone, regulating growth. |
| PROPOXYPHENES | • propoxyphenes n. Plural of propoxyphene. • PROPOXYPHENE n. a narcotic analgesic structurally related to methadone but less addicting. |
| PSYCHOSURGEON | • psychosurgeon n. One who carries out psychosurgery. • PSYCHOSURGEON n. a practitioner of psychosurgery. |
| PYRITOHEDRONS | • pyritohedrons n. Plural of pyritohedron. • PYRITOHEDRON n. a pentagonal dodecahedron. |
| RHYNCHOPHORES | • RHYNCHOPHORE n. a member of the Rhyncophora, weevils. |
| SYNCHONDROSES | • synchondroses n. Plural of synchondrosis. • SYNCHONDROSIS n. synarthrosis in which the bone surfaces are connected by cartilage. |
| SYNCHROSCOPES | • synchroscopes n. Plural of synchroscope. • SYNCHROSCOPE n. an instrument for detecting whether two moving parts are synchronized. |