| 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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| HETEROKARYOSIS | • heterokaryosis n. (Biology) The condition of being a heterokaryon. • HETEROKARYOSIS n. the condition of having cells that are heterokaryons.
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| HYDROACOUSTICS | • hydroacoustics n. Any of various sciences and technologies dealing with sound transmitted through water. • HYDROACOUSTICS n. the study of sound travelling through water.
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| HYDROLYSATIONS | • hydrolysations n. Plural of hydrolysation. • HYDROLYSATION n. the process of hydrolysing, also HYDROLYZATION.
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| HYPNOTISATIONS | • hypnotisations n. Plural of hypnotisation. • HYPNOTISATION n. the process of hypnotising, also HYPNOTIZATION.
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| ONYCHOPHAGISTS | • onychophagists n. Plural of onychophagist. • ONYCHOPHAGIST n. one who bites their fingernails.
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| PHOTOCATALYSIS | • photocatalysis n. (Chemistry) catalysis by a photocatalyst. • PHOTOCATALYSIS n. the promotion, acceleration or retardation of a chemical reaction by light.
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| POLYHISTORIANS | • polyhistorians n. Plural of polyhistorian. • POLYHISTORIAN n. a person of great and varied learning, also POLYHISTOR.
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| PSYCHOACOUSTIC | • psychoacoustic adj. Of or pertaining to psychoacoustics. • PSYCHOACOUSTIC adj. relating to psychoacoustics.
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| PSYCHOSOCIALLY | • psychosocially adv. With regard to psychosociology. • PSYCHOSOCIAL adv. involving both psychological and social aspects.
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| PSYCHOSOMATICS | • psychosomatics n. (Medicine) psychosomatic medicine (science). • PSYCHOSOMATICS n. the study of psychosomatic conditions.
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| RHABDOMYOLYSIS | • rhabdomyolysis n. (Medicine) The rapid disintegration of striated muscle tissue accompanied by the excretion of myoglobin in the urine. | 
| SYNAPOMORPHIES | • synapomorphies n. Plural of synapomorphy. | 
| SYPHILOPHOBIAS | • syphilophobias n. Plural of syphilophobia. • SYPHILOPHOBIA n. fear of syphilis.
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