10-letter words containing p, a, r, o
- harpooneer — A harpooner.
- harpooning — Present participle of harpoon.
- harpsicord — Dated form of harpsichord.
- hartlepool — a seaport city in NE England.
- hectograph — a process for making copies of a letter, memorandum, etc., from a prepared gelatin surface to which the original writing has been transferred.
- hektograph — to copy with the hectograph.
- heliograph — a device for signaling by means of a movable mirror that reflects beams of light, especially sunlight, to a distance.
- hemitropal — hemitropous
- heptachlor — a highly toxic, light-tan, waxy solid, C 10 H 5 Cl 7 , used as an insecticide: its manufacture and use are restricted in the U.S.
- heptachord — a musical scale of seven notes.
- heptameron — A literary work whose action covers a period of seven days.
- 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.
- holocarpic — (of a fungus) having the entire thallus converted into fruiting bodies.
- holographs — Plural form of holograph.
- holography — the process or technique of making holograms.
- 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.
- homographs — a word of the same written form as another but of different meaning and usually origin, whether pronounced the same way or not, as bear 1 “to carry; support” and bear 2 “animal” or lead 1 “to conduct” and lead 2 “metal.”.
- homography — The state or quality of being spelt homographically; the state or quality of existing as homographs.
- homopteran — homopterous.
- honor camp — a prison work camp operating on an honor system.
- 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.
- horography — the art of constructing time-keeping instruments such as watches and clocks
- 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.
- hyalograph — an instrument used in hyalography.
- hydrograph — a graph of the water level or rate of flow of a body of water as a function of time, showing the seasonal change.
- hydropathy — the curing of disease by the internal and external use of water.
- 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.
- hygrograph — a self-recording hygrometer.
- hyoplastra — the second foremost pair of plastral bones in a turtle
- hypaethron — a part of a building or court which is open to the sky
- 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.
- hyperfocal — relating to the distance beyond which a lens can be focused to produce satisfactory image quality
- hyperlocal — relating to or focused on a very small geographical community, as a neighborhood: hyperlocal news websites; hyperlocal advertising.
- hypernovae — Plural form of hypernova.
- hyperosmia — an abnormally acute sense of smell.
- hyperpnoea — abnormally deep or rapid respiration.
- hypertonia — increased rigidity, tension, and spasticity of the muscles.
- hyphenator — One who, or that which, hyphenates.
- hypnodrama — the acting out of a traumatic experience, under hypnosis, by a person undergoing psychotherapy.
- hypnograph — an instrument that measures activities of the human body during sleep.
- hypodermal — Zoology. an underlayer of epithelial cells in arthropods and certain other invertebrates that secretes substances for the overlying cuticle or exoskeleton.