13-letter words containing o, a, r, y
- nonobligatory — Not obligatory; not required; optional.
- nonrecyclable — Not recyclable.
- nonstationary — Not stationary.
- normally-open — Normally-open switch contacts are in an open state at rest.
- north babylon — a city on S Long Island, in SE New York.
- north by east — a point on the compass 11°15′ east of north. Abbreviation: NbE.
- northeasterly — of or located in the northeast.
- norway spruce — a European spruce, Picea abies, having shiny, dark-green needles, grown as an ornamental.
- nosogeography — the study of the geographical causes and distribution of diseases.
- notary public — a public officer or other person authorized to authenticate contracts, acknowledge deeds, take affidavits, protest bills of exchange, take depositions, etc.
- novocentenary — a nine-hundredth anniversary
- nutritionally — Concerning nutrition.
- objurgatively — In an objurgative or reproving manner.
- observability — capable of being or liable to be observed; noticeable; visible; discernible: an observable change in attitude.
- obstetrically — (medicine) In terms of obstetrics.
- octocentenary — pertaining to 800 or a period of 800 years; marking the completion of 800 years.
- of many parts — having many different abilities
- of many words — talkative
- on every hand — on all sides; in all directions
- on your guard — If you are on your guard or on guard, you are being very careful because you think a situation might become difficult or dangerous.
- on your marks — On your marks in British English, or on your mark in American English, is a command given to runners at the beginning of a race in order to get them into the correct position to start.
- onychophorans — Plural form of onychophoran.
- openheartedly — Alt form open-heartedly.
- opera company — a company that puts on productions of operas
- operationally — able to function or be used; functional: How soon will the new factory be operational?
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- oppositionary — the action of opposing, resisting, or combating.
- orange roughy — a marine food fish, Hoplosthenus atlanticus, of S Pacific waters
- orchesography — a written study of dancing
- orchid family — the plant family Orchidaceae, characterized by terrestrial or epiphytic herbaceous plants having simple, parallel-veined, usually alternate leaves, complex and often large and showy flowers pollinated primarily by insects, and fruit in the form of a capsule containing numerous minute seeds, and including calypso, fringed orchis, lady's-slipper, pogonia, rattlesnake plantain, vanilla, as well as numerous tropical orchids such as those of the genera Cattleya, Cymbidium, Dendrobium, Phalaenopsis, and Vanda.
- ordinary gain — An ordinary gain is a gain in the course of normal business.
- ordinary loss — An ordinary loss is a loss in the course of normal business.
- ordinary wave — Radio. (of the two waves into which a radio wave is divided in the ionosphere under the influence of the earth's magnetic field) the wave with characteristics more nearly resembling those that the undivided wave would have exhibited in the absence of the magnetic field.
- organotherapy — the branch of therapeutics that deals with the use of remedies prepared from the organs of animals, as from the thyroid gland, the pancreas, or the suprarenal bodies.
- orgiastically — In an orgiastic fashion.
- originatively — in an originative manner
- ornamentality — used or grown for ornament: ornamental plants.
- oropharyngeal — the part of the pharynx between the soft palate and the upper edge of the epiglottis.
- orthoepically — In terms of correct pronunciation.
- orthogonality — (mathematics, statistics) the property of being orthogonal.
- 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.
- over-analytic — pertaining to or proceeding by analysis (opposed to synthetic).
- overanalyzing — Present participle of overanalyze.
- overbearingly — domineering; dictatorial; haughtily or rudely arrogant.
- overlay glass — case glass.
- overstability — the state of being excessively stable
- overzealously — too zealous: overzealous for reform.
- ovoviviparity — producing eggs that are hatched within the body, so that the young are born alive but without placental attachment, as certain reptiles or fishes.
- 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.
- palaeocrystic — consisting of former glacial formation