| AEROHYDROPLANES | • AEROHYDROPLANE n. a winged hydroplane or flying-boat. |
| ARCHAEOPTERYXES | • archaeopteryxes n. Plural of archaeopteryx. • ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits. |
| BRACHYTHERAPIES | • brachytherapies n. Plural of brachytherapy. • BRACHYTHERAPY n. a medical procedure used in the treatment of prostate cancer. |
| ELECTROMYOGRAPH | • electromyograph n. A device used in electromyography to generate electromyograms. • ELECTROMYOGRAPH n. an instrument for diagnosing neuromuscular disorders. |
| HYETOMETROGRAPH | • HYETOMETROGRAPH n. an instrument for recording rainfall. |
| HYPERADRENALISM | • hyperadrenalism n. (Pathology) An excessive level of adrenal hormones in the body. • HYPERADRENALISM n. excessive activity of the adrenal gland. |
| HYPERAGGRESSIVE | • hyperaggressive adj. Extremely aggressive. • HYPERAGGRESSIVE adj. excessively aggressive. |
| HYPERMETROPICAL | • hypermetropical adj. Synonym of hypermetropic. • HYPERMETROPICAL adj. longsighted, also HYPERMETROPIC. |
| HYPERNATRAEMIAS | • hypernatraemias n. Plural of hypernatraemia. • HYPERNATRAEMIA n. an abnormally high concentration of sodium chloride (salt) in the blood, esp. in infants. |
| HYPERREACTIVITY | • hyperreactivity n. (Uncountable) The condition of being hyperreactive. • hyperreactivity n. (Countable) An allergic response to a very low dose of irritant. • HYPERREACTIVITY n. the state of being hyperreactive. |
| HYPERURICAEMIAS | • hyperuricaemias n. Plural of hyperuricaemia. • HYPERURICAEMIA n. an abnormal elevation of uric acid in the blood, also HYPERURICEMIA. |
| HYPOMENORRHOEAS | • hypomenorrhoeas n. Plural of hypomenorrhoea. • HYPOMENORRHOEA n. the condition in which the interval between two menstrual periods is increased to between 35 and 42 days, also HYPOMENORRHEA. |
| PHYTOGEOGRAPHER | • phytogeographer n. A person involved in phytogeography. • PHYTOGEOGRAPHER n. a student of phytogeography. |
| PTERYLOGRAPHIES | • pterylographies n. Plural of pterylography. • PTERYLOGRAPHY n. a description of pterylae. |
| PYRETOTHERAPIES | • PYRETOTHERAPY n. medical treatment by causing fever. |
| RADIOTELEGRAPHY | • radiotelegraphy n. The process and techniques of sending telegrams using radio waves rather than wires. • radio␣telegraphy n. The transmission of Morse code (etc) using radio. • RADIOTELEGRAPHY n. signalling by radiotelegraph, wireless telegraphy. |
| ROENTGENOGRAPHY | • roentgenography n. Radiography; The production of roentgenograms. • ROENTGENOGRAPHY n. radiography. |
| RONTGENOTHERAPY | • RONTGENOTHERAPY n. treatment by X-rays. |