13-letter words containing h, s, a
- old-fashioned — of a style or kind that is no longer in vogue: an old-fashioned bathing suit.
- ombudsmanship — The position or office of an ombudsman.
- on one's head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
- on the parish — receiving parochial relief
- on the square — a rectangle having all four sides of equal length.
- one-upmanship — the art or practice of achieving, demonstrating, or assuming superiority in one's rivalry with a friend or opponent by obtaining privilege, status, status symbols, etc.: the one-upmanship of getting into the president's car pool.
- onychophagist — the practice of biting one's nails, especially when done habitually and as a symptom of emotional disturbance.
- onychophorans — Plural form of onychophoran.
- open and shut — immediately obvious upon consideration; easily decided: an open-and-shut case of murder.
- open sandwich — a sandwich served on only one slice of bread, without a covering slice.
- open-and-shut — immediately obvious upon consideration; easily decided: an open-and-shut case of murder.
- opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- opthalmoscope — Misspelling of ophthalmoscope.
- optic chiasma — a site at the base of the forebrain where the inner half of the fibers of the left and right optic nerves cross to the opposite side of the brain.
- orange squash — an orange-flavoured drink made from fruit juice, sugar, and water
- orchard grass — a weedy grass, Dactylis glomerata, often grown for pastures.
- orchesography — a written study of dancing
- orchestra pit — musicians' seating in front of stage
- orchestra-pit — a group of performers on various musical instruments, including especially stringed instruments of the viol class, clarinets and flutes, cornets and trombones, drums, and cymbals, for playing music, as symphonies, operas, popular music, or other compositions.
- orchestralist — a person who writes or arranges orchestral music
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- orchestrators — Plural form of orchestrator.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- ornithischian — any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Compare saurischian.
- orthognathous — straight-jawed; having the profile of the face vertical or nearly so; having a gnathic index below 98.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthographies — Plural form of orthography.
- orthosilicate — a silicate mineral
- oscillographs — Plural form of oscillograph.
- oscillography — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- ostreophagous — oyster-eating
- outwash plain — Geology. a broad, sloping landform built of coalesced deposits of outwash.
- overachievers — Plural form of overachiever.
- overemphasise — (British) alternative spelling of overemphasize.
- overemphasize — to emphasize excessively.
- overhastiness — the condition of being overhasty
- overhead-shot — over one's head; aloft; up in the air or sky, especially near the zenith: There was a cloud overhead.
- oystercatcher — any of several long-billed wading birds of the genus Haematopus that have chiefly black-and-white plumage and that feed on oysters, clams, mussels, etc.
- packet switch — packet switching
- packing house — A packing house is a company that processes and packs food, especially meat, to be sold.
- paedomorphism — the continuation of juvenile characteristics in the adult stage
- painted horse — paint (def 6).
- paisley shawl — a shawl made from paisley fabric
- pallas athena — Also, Athene [uh-thee-nee] /əˈθi ni/ (Show IPA). Also called Pallas, Pallas Athena. the virgin deity of the ancient Greeks worshiped as the goddess of wisdom, fertility, the useful arts, and prudent warfare. At her birth she sprang forth fully armed from the head of her father, Zeus. Compare Minerva.
- palos heights — a city in NE Illinois, near Chicago.
- panaesthetism — the belief that consciousness may be present in all matter
- pandora shell — any marine bivalve of the genus Pandora, having a scimitar-shaped shell with a pronounced ridge along the hinge.
- pantheologist — a student of, or expert in, pantheology