13-letter words containing d, o, r, a
- old man river — a name for the Mississippi River
- old norwegian — the language of Norway as spoken and written from the middle of the 12th to the end of the 14th centuries.
- old provencal — the Provençal language as found in documents from the 11th to the 16th centuries. Abbreviation: OPr.
- old ritualist — Raskolnik.
- olduvai gorge — a gorge in Tanzania in which is located a site containing Australopithecine and human skeletal and cultural remains.
- 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.
- onus probandi — the burden of proof.
- open-standard — (of computer programs, codes, etc) freely available to all users
- openheartedly — Alt form open-heartedly.
- optical drive — optical disk drive
- orbital index — the ratio of the maximum breadth to the maximum height of the orbital cavity multiplied by 100.
- orchard grass — a weedy grass, Dactylis glomerata, often grown for pastures.
- orchard valve — an alfalfa valve of lesser diameter than the pipe it closes.
- 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.
- orchidomaniac — a person who is obsessed with or has a passion for orchids
- order a drink — When a customer orders a drink, they ask for it to be brought to them.
- ordinal scale — a scale on which data is shown simply in order of magnitude since there is no standard of measurement of differences: for instance, a squash ladder is an ordinal scale since one can say only that one person is better than another, but not by how much
- 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.
- organ grinder — an itinerant street musician who earns a living by playing a hand organ or hurdy-gurdy.
- organ-builder — a maker of organs
- organ-grinder — an itinerant street musician who earns a living by playing a hand organ or hurdy-gurdy.
- orlando lasso — Orlando di [dee] /di/ (Show IPA), (Orlandus Lassus) 1532–94, Flemish composer.
- orsellic acid — an acid found in lichens
- orthodiagonal — the axis in a crystal
- orthopaedical — Pertaining to orthopaedics; characteristic of orthopaedia.
- orthopinakoid — a crystalline plane
- osborne, adam — Adam Osborne
- out of danger — no longer at risk
- out-and-outer — a person who does things with excessive thoroughness; extremist.
- outdoorswoman — a woman devoted to outdoor sports and recreational activities.
- outgeneralled — Simple past tense and past participle of outgeneral.
- outmaneuvered — Simple past tense and past participle of outmaneuver.
- outmanoeuvred — Simple past tense and past participle of outmanoeuvre.
- outrecuidance — (archaic) Presumption, arrogance, self-conceit.
- outward bound — (in Britain) a scheme to provide adventure training for young people
- outward-bound — headed in an outward direction, as toward foreign ports: We passed an outward-bound ship as we came into the harbor.
- over and over — above in place or position: the roof over one's head.
- over-abundant — an excessive amount or abundance; surfeit: an overabundance of sugar in the diet.
- over-detailed — having many details: a detailed problem.
- over-educated — to develop the faculties and powers of (a person) by teaching, instruction, or schooling. Synonyms: instruct, school, drill, indoctrinate.
- over-idealize — to make ideal; represent in an ideal form or character; exalt to an ideal perfection or excellence.
- over-pampered — to treat or gratify with extreme or excessive indulgence, kindness, or care: to pamper a child; to pamper one's stomach.
- over-standing — overreach (def 13).
- over-the-road — of, for, or pertaining to transportation on public highways: over-the-road trucks.
- overabundance — an excessive amount or abundance; surfeit: an overabundance of sugar in the diet.
- overallocated — Allocated in excess.
- overamplified — amplified too much, causing distortion or discomfort, etc