13-letter words containing a, r, o, s, e
- nosogeography — the study of the geographical causes and distribution of diseases.
- novocherkassk — a city in the SW Russian Federation in Europe, NE of Rostov.
- observability — capable of being or liable to be observed; noticeable; visible; discernible: an observable change in attitude.
- observational — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- observatories — Plural form of observatory.
- observer team — a team deployed to an area of conflict to observe proceedings
- obstacle race — a foot race in which the contestants are prevented in a specific way from covering the full course at top speed, as by having hurdles to jump, sacks enclosing the legs, or potatoes to pick up.
- obstetrically — (medicine) In terms of obstetrics.
- obstetricians — Plural form of obstetrician.
- ocean springs — a town in SE Mississippi.
- oceanic crust — the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
- octogenarians — Plural form of octogenarian.
- of all others — above all others
- off the rails — into or in a state of dysfunction or disorder
- olfactometers — Plural form of olfactometer.
- on one's part — a portion or division of a whole that is separate or distinct; piece, fragment, fraction, or section; constituent: the rear part of the house; to glue the two parts together.
- on sufferance — passive permission resulting from lack of interference; tolerance, especially of something wrong or illegal (usually preceded by on or by).
- on the parish — receiving parochial relief
- on the square — a rectangle having all four sides of equal length.
- open-standard — (of computer programs, codes, etc) freely available to all users
- opentransport — (networking) (OT) A complete reimplementation of all levels of the Macintosh networking code including "Classic" AppleTalk and MacTCP. It appeared in MacOS revision 7.5.3 [or earlier? Date?].
- opera glasses — small binoculars
- operativeness — (uncountable) The state or quality of being operative.
- oraculousness — the state of being oraculous
- orange squash — an orange-flavoured drink made from fruit juice, sugar, and water
- orate fratres — the call to prayer, addressed by the celebrant of the Mass to the people just before the Secret.
- 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.
- 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
- 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.
- organoarsenic — (organic chemistry) Describing any organic compound containing a carbon to arsenic bond.
- organogenesis — Biology. the origin and development of an organ.
- originalities — Plural form of originality.
- ornamentalism — the desire or tendency to feature ornament in the design of buildings, interiors, furnishings, etc.
- ornamentalist — A person who ornaments.
- orsellic acid — an acid found in lichens
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthographies — Plural form of orthography.
- orthosilicate — a silicate mineral
- osborne, adam — Adam Osborne
- osmoregulator — Any organism that practices osmoregulation.
- ostreophagous — oyster-eating
- out of square — a rectangle having all four sides of equal length.
- out-of-stater — a visitor from another state of the U.S.: Many out-of-staters come to our summer music festival.
- outlaw strike — wildcat strike.