9-letter words containing o, p, y
- hydroptic — (formerly) edema.
- hydropult — a type of water pump or machine that expels water by means of hand power, as, for example, a fire extinguisher
- hylophyte — a plant that grows in woods
- hyperbola — the set of points in a plane whose distances to two fixed points in the plane have a constant difference; a curve consisting of two distinct and similar branches, formed by the intersection of a plane with a right circular cone when the plane makes a greater angle with the base than does the generator of the cone. Equation: x 2 /a 2 − y 2 /b 2 = ±1.
- hyperbole — obvious and intentional exaggeration.
- hyperform — a pronunciation or grammatical form or usage produced by hypercorrection.
- hypernova — (astronomy) The gravitational collapse of a massive star to form a black hole.
- hyperonym — (linguistics) Hypernym; superordinate term.
- hyperopia — a condition of the eye in which parallel rays are focused behind the retina, distant objects being seen more distinctly than near ones; farsightedness (opposed to myopia).
- hyperopic — Farsighted; of, having, or pertaining to hyperopia.
- hyperoxia — (pathology) A condition caused by an excess of oxygen in tissues and organs.
- hyperoxic — Of, pertaining to, or exhibiting hyperoxia.
- hypinosis — a protein deficiency or reduction in blood
- hypnodiet — a diet involving the use of hypnosis to change one's attitude to food
- hypnogeny — hypnosis or the induction of a hypnotic state
- hypnoidal — characterizing a state that resembles mild hypnosis but that is usually induced by other than hypnotic means.
- hypnology — the science dealing with the phenomena of sleep.
- hypnotics — Plural form of hypnotic.
- hypnotise — to put in the hypnotic state.
- hypnotism — the science dealing with the induction of hypnosis.
- hypnotist — the science dealing with the induction of hypnosis.
- hypnotize — to put in the hypnotic state.
- hypnotoid — resembling or similar to hypnosis
- hypobaric — (of an anesthetic) having a specific gravity lower than that of cerebrospinal fluid. Compare hyperbaric (def 1).
- hypobasis — the lowermost distinctively treated part of a base.
- hypoblast — the endoderm.
- hypocaust — a hollow space or system of channels in the floor or walls of some ancient Roman buildings that provided a central heating system by receiving and distributing the heat from a furnace.
- hypocotyl — the part of a plant embryo directly below the cotyledons, forming a connection with the radicle.
- hypocracy — Misspelling of hypocrisy.
- hypocrism — (obsolete) hypocrisy.
- hypocrisy — a pretense of having a virtuous character, moral or religious beliefs or principles, etc., that one does not really possess.
- hypocrite — a person who feigns some desirable or publicly approved attitude, especially one whose private life, opinions, or statements belie his or her public statements.
- hypodense — Less dense (than normal).
- hypoderma — hypodermis.
- hypogenic — formed beneath the earth's surface, as granite (opposed to epigene).
- hypogeous — underground; subterranean.
- hypomania — a mania of low intensity.
- hypomanic — Afflicted with a mild state of mania.
- hypomorph — a mutant gene
- hyponasty — increased growth along the lower surface of a plant or plant part, causing it to bend upward.
- hyponymic — Of or pertaining to hyponyms.
- hypophora — (rhetoric) A device in which the author poses a question which is in turn answered.
- hypophyge — apophyge (def 2).
- hypoploid — having a chromosome number that is less than the diploid number.
- hypopneas — Plural form of hypopnea.
- hypopneic — of or relating to hypopnoea
- hypopnoea — Alternative spelling of hypopnea.
- hypopyons — Plural form of hypopyon.
- hyporheic — Denoting an area or ecosystem beneath the bed of a river or stream that is saturated with water and that supports invertebrate fauna which play a role in the larger ecosystem.
- hypospray — (science fiction) A kind of jet injector.