13-letter words containing c, a, r, s, o
- non-insurance — the act, system, or business of insuring property, life, one's person, etc., against loss or harm arising in specified contingencies, as fire, accident, death, disablement, or the like, in consideration of a payment proportionate to the risk involved.
- non-racialism — racism.
- non-realistic — interested in, concerned with, or based on what is real or practical: a realistic estimate of costs; a realistic planner.
- non-sectarian — not affiliated with or limited to a specific religious denomination.
- non-spherical — having the form of a sphere; globular.
- non-vesicular — of or relating to a vesicle or vesicles.
- noncarbonates — Plural form of noncarbonate.
- noncolourfast — (of a fabric) having a colour that tends to fade when washed or worn
- nonconversant — Not conversant.
- nondecreasing — not decreasing.
- nonhistorical — Not based on or drawn from history.
- nonhysterical — not hysterical or funny
- nonincreasing — not increasing.
- nonobservance — absence or lack of observance.
- nonpractising — of or relating to a person who no longer observes or pursues his or her religious faith
- nonresistance — the policy or practice of not resisting violence or established authority, even when tyrannical, by force.
- nonstructural — Not structural; not related to a structure.
- normal school — (formerly) a school offering a two-year course and certification to high-school graduates preparing to be teachers, especially elementary-school teachers.
- norway spruce — a European spruce, Picea abies, having shiny, dark-green needles, grown as an ornamental.
- novocherkassk — a city in the SW Russian Federation in Europe, NE of Rostov.
- 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.
- occam's razor — the maxim that assumptions introduced to explain a thing must not be multiplied beyond necessity.
- 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.
- olfactometers — Plural form of olfactometer.
- on sufferance — passive permission resulting from lack of interference; tolerance, especially of something wrong or illegal (usually preceded by on or by).
- onychophorans — Plural form of onychophoran.
- 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.
- oraculousness — the state of being oraculous
- 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.
- 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
- organoarsenic — (organic chemistry) Describing any organic compound containing a carbon to arsenic bond.
- organosilicon — pertaining to or noting an organic compound containing silicon, especially where attached directly to a carbon atom.
- orgiastically — In an orgiastic fashion.
- orismological — relating to orismology
- ornithischian — any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Compare saurischian.
- orsellic acid — an acid found in lichens
- 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.