| HOLIDAYERS | • holidayers n. Plural of holidayer. • HOLIDAYER n. a holidaymaker.
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| HYDROFOILS | • hydrofoils n. Plural of hydrofoil. • HYDROFOIL n. a boat fitted with hydrofoils to lift its hull clear of the water at speed.
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| HYDROLOGIC | • hydrologic adj. Of or pertaining to hydrology. • HYDROLOGIC adj. relating to hydrology, also HYDROLOGICAL.
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| HYDROLYSIS | • hydrolysis n. (Chemistry) A chemical process of decomposition involving the splitting of a bond and the addition of… • HYDROLYSIS n. a decomposition reaction involving water, in which hydrogen ions replace other ions.
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| HYDROLYTIC | • hydrolytic adj. Of, pertaining to, or accompanied by hydrolysis. • HYDROLYTIC adj. tending to remove or separate water.
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| HYDROPHILE | • hydrophile n. (Chemistry) Any hydrophilic substance. • hydrophile n. (Zoology) Any organism that thrives in the presence of water.
 • hydrophile adj. Hydrophilic.
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| HYDROPHILY | • hydrophily n. A form of pollination whereby pollen is distributed by the flow of waters, particularly in rivers and streams. • HYDROPHILY n. an affinity for water.
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| HYDROSOLIC | • hydrosolic adj. Relating to a hydrosol. • HYDROSOLIC adj. relating to a hydrosol, an aqueous solution of a colloid.
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| HYDROXYLIC | • hydroxylic adj. (Chemistry) Of, pertaining to, or containing hydroxyl groups. • HYDROXYLIC adj. pertaining to a hydroxyl.
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| HYPERPLOID | • hyperploid adj. (Genetics) Having a number of chromosomes that exceeds an exact multiple of the haploid number. • hyperploid adj. (Medicine) Having a number of chromosomes that exceeds the diploid number.
 • hyperploid n. A hyperploid organism.
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| POLYHEDRIC | • polyhedric adj. Polyhedral; many-sided. • POLYHEDRIC adj. having many faces or planes, also POLYHEDRAL.
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| POLYHYBRID | • polyhybrid n. A hybrid whose parents differ in several ways. • POLYHYBRID n. a plant hybridised from many sources.
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| POLYHYDRIC | • polyhydric adj. (Chemistry) containing two or more hydroxy groups. • POLYHYDRIC adj. having several hydroxyl groups.
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| PREHOLIDAY | • preholiday adj. Before a holiday. • PREHOLIDAY adj. taking place before a holiday.
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| THIRTYFOLD | • thirtyfold adj. Thirty times as great, or as many. • thirtyfold adv. By a factor of thirty.
 • THIRTYFOLD adv. multiplied by thirty.
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| THYRSOIDAL | • thyrsoidal adj. Alternative form of thyrsoid. • THYRSOIDAL adj. having the form of a thyrsus, also THYRSOID.
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