v. (also -ise) (-zing or -sing) 1 subject (a species etc.) To crossbreeding.
- a produce hybrids. B (of an animal or plant) interbreed. hybridization n.
HYDRANGEA
n. Shrub with globular clusters of white, pink, or blue flowers. [greek hudor water, aggos vessel]
HYDRAULIC
adj. - (of water, oil, etc.) Conveyed through pipes or channels.
- (of a mechanism etc.) Operated by liquid moving in this way (hydraulic brakes). hydraulically adv. [greek hudor water, aulos pipe]
HYDROFOIL
n. - boat equipped with planes for lifting its hull out of the water to increase its speed.
- such a plane.
HYDROLOGY
n. Science of the properties of water, esp. Of its movement in relation to land. hydrologist n.
HYDROLYSE
v. (us -lyze) (-sing or -zing) decompose by hydrolysis.
HYDROLYZE
v. (brit. -lyse) decompose by hydrolysis.
HYDROXIDE
n. Compound containing oxygen and hydrogen as either a hydroxide ion or a hydroxyl group.
HYMNOLOGY
n. (pl. -ies) 1 the composition or study of hymns.
- hymns collectively. hymnologist n.
HYPERBOLA
n. (pl. -s or -lae) plane curve produced when a cone is cut by a plane that makes a larger angle with the base than the side of the cone makes. hyperbolic adj. [greek hyperbole, = excess: related to *hyper-, ballo throw]
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