9-letter words containing y, a, p, o
- gyroplane — autogiro.
- halophily — the ability or predisposition to thrive in an extremely salty environment
- halophyte — a plant that thrives in saline soil.
- haplology — the omission of one of two similar adjacent syllables or sounds in a word, as in substituting morphonemic for morphophonemic or in the pronunciation [prob-lee] /ˈprɒb li/ (Show IPA) for probably.
- haplotype — Genetics. a combination of closely linked DNA sequences on one chromosome that are often inherited together: By comparing haplotypes of a mother and father with those of a fetus, scientists can study how new genetic changes arise.
- hard copy — copy, as computer output printed on paper, that can be read without using a special device (opposed to soft copy).
- hemopathy — (medicine) Any disorder or disease of the blood.
- heptalogy — (rare) # A set of seven works of art that are connected, and that can be seen either as a single work or as seven individual works. They are commonly found in literature, film, or video games.
- heptapody — a verse with seven metrical feet
- hippolyta — a queen of the Amazons, variously said to have been killed by Hercules or to have been conquered and married by Theseus.
- homoplasy — correspondence in form or structure, owing to a similar environment.
- homotypal — of normal type
- honeytrap — A stratagem in which irresistible bait is used to lure a victim.
- horseplay — rough or boisterous play or pranks.
- 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.
- hypernova — (astronomy) The gravitational collapse of a massive star to form a black hole.
- 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).
- hyperoxia — (pathology) A condition caused by an excess of oxygen in tissues and organs.
- hypnoidal — characterizing a state that resembles mild hypnosis but that is usually induced by other than hypnotic means.
- 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.
- hypocracy — Misspelling of hypocrisy.
- hypoderma — hypodermis.
- hypomania — a mania of low intensity.
- hypomanic — Afflicted with a mild state of mania.
- hyponasty — increased growth along the lower surface of a plant or plant part, causing it to bend upward.
- hypophora — (rhetoric) A device in which the author poses a question which is in turn answered.
- hypopneas — Plural form of hypopnea.
- hypopnoea — Alternative spelling of hypopnea.
- hypospray — (science fiction) A kind of jet injector.
- hypostoma — Hypostome.
- hypotaxis — dependent relation or construction, as of clauses; syntactic subordination.
- hypotheca — (microbiology, planktology) The lower or posterior half of the theca of a thecate protist such as a diatom or dinoflagellate.
- hypotonia — An abnormal loss of muscle tone.
- hypoxemia — inadequate oxygenation of the blood.
- idiopathy — a disease not preceded or occasioned by any known morbid condition.
- isopycnal — Also, isopycnal [ahy-suh-pik-nl] /ˌaɪ səˈpɪk nl/ (Show IPA). having the same density.
- karyotype — the chromosomes of a cell, usually displayed as a systematized arrangement of chromosome pairs in descending order of size.
- kymograph — an instrument for measuring and graphically recording variations in fluid pressure, as those of the human pulse.
- labor spy — an employee who is used by management to spy on union activities.
- lalopathy — any defect of speech.
- laypeople — a person who is not a member of the clergy; one of the laity.
- layperson — a person who is not a member of the clergy; one of the laity.
- long play — a long-playing phonograph record.
- lymphomas — Plural form of lymphoma.
- macrocopy — an enlargement of printed material for easier reading
- manoscopy — the measurement of the densities of gases
- mastopexy — fixation of a pendulous breast.