15-letter words containing s, e, a, t
- object distance — the distance between the lens of a camera and an object being photographed.
- observation car — a railroad passenger car having a lounge or platform from which the scenery can be viewed.
- observationally — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- obstacle course — a military training area having obstacles, as hurdles, ditches, and walls, that must be surmounted or crossed in succession.
- obtuse triangle — a triangle with one obtuse angle.
- ocean of storms — the largest of the dark plains (maria) on the surface of the moon, situated in the second and third quadrant
- official strike — a collective stoppage of work by part or all of the workforce of an organization with the approval of the trade union concerned. The stoppage may be accompanied by the payment of strike pay by the trade union concerned
- oil-based paint — any paint made with a drying oil or solvent such as linseed
- old clothes man — a person who deals in second-hand clothes
- old wives' tale — a traditional belief, story, or idea that is often of a superstitious nature.
- old-established — established for a long time
- old-man-the-sea — (in The Arabian Nights' Entertainments) an old man who clung to the shoulders of Sindbad the Sailor for many days and nights.
- oligomerisation — Alternative spelling of oligomerization.
- on a shoestring — If you do something or make something on a shoestring, you do it using very little money.
- on the decrease — decreasing
- on the increase — growing, increasing
- one's last hour — the time of one's death
- one-night stand — a single performance in one locale, as by a touring theatrical company, before moving on to the next engagement.
- opencast mining — mining by excavating from the surface
- opening batsman — a player who bats the first ball in cricket
- operationalised — Simple past tense and past participle of operationalise.
- operations room — a room from which all the operations of a military, police, or other disciplined activity are controlled
- ophthalmoscopes — Plural form of ophthalmoscope.
- opinionatedness — The state or condition of being opinionated.
- optical scanner — the process of interpreting data in printed, handwritten, bar-code, or other visual form by a device (optical scanner or reader) that scans and identifies the data.
- optical storage — optical disk drive
- orchestrational — Of or pertaining to orchestration.
- organophosphate — Biochemistry. any of a variety of organic compounds that contain phosphorus and often have intense neurotoxic activity: originally developed as nerve gases, now widely used as insecticides and fire retardants.
- ortega saavedra — (José) Daniel [haw-se dah-nyel] /hɔˈsɛ dɑˈnyɛl/ (Show IPA), born 1945, Nicaraguan political leader: president 1985–90.
- ortega y gasset — José [haw-se] /hɔˈsɛ/ (Show IPA), 1883–1955, Spanish philosopher, journalist, and critic.
- outer barrister — a barrister belonging to the outer bar.
- outside caliper — a caliper whose legs turn inward so that it can measure outside dimensions, as the diameter of a rod.
- outside forward — one of two attacking players who usually play on the far side of the field; wing.
- outstandingness — prominent; conspicuous; striking: an outstanding example of courage.
- over-advertised — to announce or praise (a product, service, etc.) in some public medium of communication in order to induce people to buy or use it: to advertise a new brand of toothpaste.
- over-assessment — too much assessment
- over-capitalise — to fix the total amount of securities of a corporation in excess of the limits set by law or by sound financial policy.
- over-compensate — to compensate or reward excessively; overpay: Some stockholders feel the executives are being overcompensated and that bonuses should be reduced.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- over-estimation — to estimate at too high a value, amount, rate, or the like: Don't overestimate the car's trade-in value.
- over-passionate — having, compelled by, or ruled by intense emotion or strong feeling; fervid: a passionate advocate of socialism.
- overcapitalizes — Third-person singular simple present indicative form of overcapitalize.
- overcompensated — to compensate or reward excessively; overpay: Some stockholders feel the executives are being overcompensated and that bonuses should be reduced.
- overcompensates — Third-person singular simple present indicative form of overcompensate.
- overorchestrate — to compose or arrange excessively
- overspeculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- overstimulation — to rouse to action or effort, as by encouragement or pressure; spur on; incite: to stimulate his interest in mathematics.
- oxidation state — the state of an element or ion in a compound with regard to the electrons gained or lost by the element or ion in the reaction that formed the compound, expressed as a positive or negative number indicating the ionic charge of the element or ion.
- oyster toadfish — See under toadfish (def 1).
- pachymeningitis — inflammation of the dura mater of the brain and spinal cord