10-letter words containing a, p, e, r
- heptachord — a musical scale of seven notes.
- heptameron — A literary work whose action covers a period of seven days.
- heptameter — a verse of seven metrical feet.
- heraldship — the office or position of a herald
- herb paris — a European plant, Paris quadrifolia, of the lily family, formerly used in medicine.
- hermatypic — reef-building coral.
- herpangina — an infectious disease, especially of children, characterized by a sudden occurrence of fever, loss of appetite, and throat ulcerations, caused by a Coxsackie virus.
- hierograph — sacred writing or characters
- hierophant — (in ancient Greece) an official expounder of rites of worship and sacrifice.
- hierophany — A physical manifestation of the holy or sacred, serving as a spiritual eidolon for emulation or worship.
- hit parade — a listing or category of popular songs ranked according to their popularity with listeners, usually as shown by sales of records.
- holophrase — a word functioning as a phrase or sentence, as the imperative Go!
- home scrap — scrap steel reprocessed in the steel mill in which it was produced.
- homopteran — homopterous.
- hop garden — a field of hops
- hopper car — a freight car, usually open at the top and containing one or more hoppers so that bulk cargo can be quickly discharged through its bottom.
- hospitaler — a member of the religious and military order (Knights Hospitalers or Knights of St. John of Jerusalem) originating about the time of the first Crusade (1096–99) and taking its name from a hospital at Jerusalem.
- hydrophane — a partly translucent variety of opal, which becomes more translucent or transparent when immersed in water.
- hydroplane — a seaplane.
- hydrospace — the regions beneath the surface of the oceans and seas.
- hyetograph — a map or chart showing the average rainfall for the localities represented.
- hypaethral — (of a classical building) wholly or partly open to the sky.
- hypaethron — a part of a building or court which is open to the sky
- hyperacute — sharp or severe in effect; intense: acute sorrow; an acute pain.
- hyperaemia — an abnormally large amount of blood in any part of the body.
- hyperalert — fully aware and attentive; wide-awake; keen: an alert mind.
- hyperalgia — an exaggerated sense of pain (opposed to hypalgesia).
- hyperaphia — abnormal sensitivity to touch.
- hyperaware — having knowledge; conscious; cognizant: aware of danger.
- hyperbaric — (of an anesthetic) having a specific gravity greater than that of cerebrospinal fluid. Compare hypobaric.
- hyperbatic — relating to a hyperbaton
- hyperbaton — the use, especially for emphasis, of a word order other than the expected or usual one, as in “Bird thou never wert.”.
- hyperbolas — Plural form of hyperbola.
- hyperchaos — (mathematics) A form of chaotic behaviour with at least two positive Lyapunov exponents.
- hyperdulia — the veneration offered to the Virgin Mary as the most exalted of creatures.
- hyperfocal — relating to the distance beyond which a lens can be focused to produce satisfactory image quality
- hypergiant — (star) A star that is extremely massive and even more luminous than a supergiant.
- hypergraph — (mathematics) A generalization of a graph, in which edges can connect any number of vertices.
- hyperlapse — Lb photography A form of time-lapse photography where the camera is gradually moved across a long distance, such as down a highway, and a frame is captured at each new position.
- hyperlocal — relating to or focused on a very small geographical community, as a neighborhood: hyperlocal news websites; hyperlocal advertising.
- hypermania — excessive excitement or enthusiasm; craze: The country has a mania for soccer.
- hypermanic — pertaining to or affected by mania.
- hypermedia — hypertext
- hypernovae — Plural form of hypernova.
- hyperosmia — an abnormally acute sense of smell.
- hyperplane — a subspace of a vector space that has dimension one less than the dimension of the vector space.
- hyperpnoea — abnormally deep or rapid respiration.
- hyperspace — a Euclidean space of dimension greater than three.
- hypersparc — (processor) The successor to the SuperSPARC processor, based on the SPARC ISA. The HyperSPARC has smaller caches than the SuperSPARC: 8kb on-chip and 256kb off-chip (compared with 36kb and 1Mb). The HyperSPARC's memory management is optimised for more efficient out-of-cache addressing which means quicker access to external (slower, cheaper) memory.
- hypertonia — increased rigidity, tension, and spasticity of the muscles.