11-letter words containing h, o, a, r
- oathbreaker — Someone who breaks an oath.
- ocean perch — redfish (def 1).
- ochlocratic — Pertaining to ochlocracy.
- octachordal — having or consisting of eight notes or eight strings
- octahedrite — anatase.
- octahedrons — Plural form of octahedron.
- octahydrate — (chemistry) A hydrate whose solid contains eight molecules of water of crystallization per molecule, or per unit cell.
- odontograph — an instrument for laying out the forms of gear teeth or ratchets.
- off the air — a mixture of nitrogen, oxygen, and minute amounts of other gases that surrounds the earth and forms its atmosphere.
- offshoreman — a person who works offshore, especially on an offshore oil rig.
- oil varnish — a preparation consisting of resinous matter, as copal or lac, dissolved in an oil (oil varnish) or in alcohol (spirit varnish) or other volatile liquid. When applied to the surface of wood, metal, etc., it dries and leaves a hard, more or less glossy, usually transparent coating.
- old scratch — the devil; Satan.
- oligarchies — Plural form of oligarchy.
- ommatophore — a tentacle or movable stalk bearing an eye, as in certain snails.
- on the rack — If you say that someone is on the rack, you mean that they are suffering either physically or mentally.
- on the road — a novel (1957) by Jack Kerouac.
- one another — each other
- onslaughter — An onslaught.
- open-hearth — noting, pertaining to, or produced by the open-hearth process.
- openhearted — Frank and candid.
- opera house — a theater devoted chiefly to operas.
- ophidiarium — an enclosure for snakes, adapted to their normal living conditions
- or anything — You can add or anything to the end of a clause or sentence in order to refer vaguely to other things that are or may be similar to what has just been mentioned.
- or whatever — You say or whatever to refer generally to something else of the same kind as the thing or things that you have just mentioned.
- oral herpes — a disease caused by herpes simplex virus type 1, characterized primarily by a cluster of small, transient blisters chiefly at the edge of the lip or nostril; herpes labialis.
- orchardists — Plural form of orchardist.
- orchestrate — Arrange or score (music) for orchestral performance.
- orchestrina — (musical instruments) orchestrion.
- ornithosaur — an extinct flying reptile
- orphan drug — Pharmacology. a drug that remains undeveloped or untested or is otherwise neglected because of limited potential for commercial gain.
- orthoborate — (inorganic chemistry) Any anion derived from orthoboric acid; any salt containing this anion.
- orthocartan — (mathematics, tool) A system for symbolic mathematics, especially General Relativity, written by A. Krasinski of Warsaw in the early 1980s.
- orthoclases — Plural form of orthoclase.
- orthodontal — the branch of dentistry dealing with the prevention and correction of irregular teeth, as by means of braces.
- orthodontia — orthodontics.
- orthography — the art of writing words with the proper letters, according to accepted usage; correct spelling.
- orthonormal — (of a system of functions) normal; normalized.
- orthopaedic — of or relating to orthopedics.
- orthopraxia — the correction of deformities; orthopedics.
- orthopteran — orthopterous.
- orthostates — orthostat.
- orthostatic — relating to or caused by erect posture.
- osteography — The scientific description of bones; osteology.
- ostreophage — someone who loves or eats oysters
- ostreophagy — the consumption of oysters
- other ranks — (in the armed forces) all those who do not hold a commissioned rank
- other woman — a woman who is romantically or sexually involved with another woman's husband or lover, especially a woman who is having an affair with a married man.
- outreaching — Present participle of outreach.
- over-handle — a part of a thing made specifically to be grasped or held by the hand.
- over-sharer — an instance of this: Get ready for an overshare about his health problems.