| HALOPHYTISMS | • HALOPHYTISM n. the state of being a halophyte. | 
| HYDROCEPHALUSES | • hydrocephaluses n. Plural of hydrocephalus. • HYDROCEPHALUS n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY.
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| HYDROSULPHATES | • hydrosulphates n. Plural of hydrosulphate. • HYDROSULPHATE n. any quaternary acid salt formed by addition of an organic base to sulphuric acid, such as aniline hydrosulphate.
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| HYLOPATHISMS | • HYLOPATHISM n. belief in ability of matter to affect the spiritual world. | 
| HYLOPATHISTS | • hylopathists n. Plural of hylopathist. • HYLOPATHIST n. a believer in the capability of matter to affect spirit.
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| HYPOSULPHATES | • hyposulphates n. Plural of hyposulphate. • HYPOSULPHATE n. a dithionate.
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| PHOSPHATIDYLS | • phosphatidyls n. Plural of phosphatidyl. • PHOSPHATIDYL n. any of several monovalent groups that are derived from phosphatidic acids.
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| PHOSPHORYLASE | • phosphorylase n. (Biochemistry) Any enzyme that catalyzes the production of glucose phosphate from glycogen and inorganic phosphate. • PHOSPHORYLASE n. any of the enzymes that catalyze phosphorolysis with the formation of organic phosphates.
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| PHOSPHORYLASES | • phosphorylases n. Plural of phosphorylase. • PHOSPHORYLASE n. any of the enzymes that catalyze phosphorolysis with the formation of organic phosphates.
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| PHOSPHORYLATES | • phosphorylates v. Third-person singular simple present indicative form of phosphorylate. • PHOSPHORYLATE v. to cause (an organic compound) to take up or combine with phosphoric acid or a phosphorus-containing group.
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| PLETHYSMOGRAPHS | • plethysmographs n. Plural of plethysmograph. • PLETHYSMOGRAPH n. an instrument for measuring change in body part size due to blood flow.
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| PSYCHOCHEMICALS | • psychochemicals n. Plural of psychochemical. • PSYCHOCHEMICAL n. a psychoactive chemical.
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| PSYCHOPHYSICAL | • psychophysical adj. Of or pertaining to psychophysics. • psychophysical adj. Psychosomatic.
 • PSYCHOPHYSICAL adj. of or relating to psychophysics.
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| SYCOPHANTISHLY | • sycophantishly adv. In a sycophantish manner. • SYCOPHANTISH adv. like a sycophant.
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| SYNCHROFLASH | • synchroflash n. (Photography, chiefly attributive) synchronization of the flash and shutter of a camera. • SYNCHROFLASH n. a mechanism which synchronizes the opening of a camera shutter with the peak of brilliance of a flash bulb.
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| SYNCHROFLASHES | • SYNCHROFLASH n. a mechanism which synchronizes the opening of a camera shutter with the peak of brilliance of a flash bulb. | 
| SYPHILOPHOBIAS | • syphilophobias n. Plural of syphilophobia. • SYPHILOPHOBIA n. fear of syphilis.
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| THALASSOGRAPHY | • thalassography n. The scientific study of marine life. • THALASSOGRAPHY n. the science of the sea.
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| THALASSOTHERAPY | • thalassotherapy n. (Medicine) The therapeutic use of seawater. • THALASSOTHERAPY n. medical treatment using baths in sea water.
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