| AEROHYDROPLANE | • AEROHYDROPLANE n. a winged hydroplane or flying-boat. | 
| ANESTHESIOLOGY | • anesthesiology n. (American spelling, Canadian spelling) The science of administering anesthetics. • ANESTHESIOLOGY n. a branch of medical science dealing with anesthetics, also ANAESTHESIOLOGY.
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| CROTONALDEHYDE | • crotonaldehyde n. (Organic chemistry) The unsaturated aliphatic aldehyde CH3-CH=CH-CHO that is used in organic synthesis. • CROTONALDEHYDE n. a pungent liquid aldehyde obtained by dehydration of aldol.
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| CYCLOHEXANONES | • cyclohexanones n. Plural of cyclohexanone. • CYCLOHEXANONE n. a liquid ketone used esp. as a solvent and in organic synthesis.
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| DYSMENORRHOEAL | • dysmenorrhoeal adj. Alternative form of dysmenorrheal. • dysmenorrhœal adj. Obsolete form of dysmenorrheal.
 • DYSMENORRHOEAL adj. suffering from dysmenorrhoea, painful menstruation, also DYSMENORRHEAL.
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| DYSMENORRHOEAS | • dysmenorrhoeas n. Plural of dysmenorrhoea. • dysmenorrhœas n. Plural of dysmenorrhœa.
 • DYSMENORRHOEA n. painful menstruation, also DYSMENORRHEA.
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| HAEMOCYTOMETER | • haemocytometer n. (British spelling) Alternative spelling of hemocytometer. • HAEMOCYTOMETER n. an apparatus for counting the number of cells in a quantity of blood, typically consisting of a graduated pipette for drawing and diluting, also HEMOCYTOMETER.
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| HETEROKARYOSES | • HETEROKARYOSIS n. the condition of having cells that are heterokaryons. | 
| HETEROKARYOSIS | • heterokaryosis n. (Biology) The condition of being a heterokaryon. • HETEROKARYOSIS n. the condition of having cells that are heterokaryons.
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| HETEROKARYOTIC | • heterokaryotic adj. Relating to heterokaryosis or to heterokaryons. • HETEROKARYOTIC adj. relating to heterokaryosis.
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| HETEROPOLARITY | • heteropolarity n. The condition of being heteropolar. • HETEROPOLARITY n. the state of being heteropolar.
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| HYPEREMOTIONAL | • hyperemotional adj. Involving or exhibiting excessive emotion. • HYPEREMOTIONAL adj. excessively emotional.
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| HYPOMENORRHEAS | • hypomenorrheas n. Plural of hypomenorrhea. • HYPOMENORRHEA n. the condition in which the interval between two menstrual periods is increased to between 35 and 42 days, also HYPOMENORRHOEA.
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| HYPOMENORRHOEA | • hypomenorrhoea n. Alternative form of hypomenorrhea. • HYPOMENORRHOEA n. the condition in which the interval between two menstrual periods is increased to between 35 and 42 days, also HYPOMENORRHEA.
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| MEGATECHNOLOGY | • MEGATECHNOLOGY n. large-scale technology. | 
| PALAEETHNOLOGY | • PALAEETHNOLOGY n. the study of prehistoric man. | 
| PALEOGEOGRAPHY | • paleogeography n. Alternative spelling of palaeogeography. • PALEOGEOGRAPHY n. the geography of ancient times or of a particular past geological epoch.
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| RADIOTELEPHONY | • radiotelephony n. The transmission of sound (in both directions) using modulated radio waves rather than wires. • radio␣telephony n. The transmission of speech using modulated radio waves.
 • RADIOTELEPHONY n. communication by radiotelephone.
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