15-letter words containing a, c, o
- on the decrease — decreasing
- on the increase — growing, increasing
- on the track of — If you are on the track of someone or something, you are trying to find them, or find information about them.
- once in a while — at one time in the past; formerly: I was a farmer once; a once powerful nation.
- onomasiological — the study of the means of expressing a given concept.
- opencast mining — mining by excavating from the surface
- opening balance — the amount of money in an account at the start of an accounting period
- operating cycle — the period of time between starting a business and making a profit
- ophthalmoscopes — Plural form of ophthalmoscope.
- ophthalmoscopic — Of, pertaining to or using an ophthalmoscope.
- optical printer — a film printer used in making optical effects, consisting basically of a camera that photographs the image with special lenses to enlarge, reduce, distort, etc., and a projector that transfers the image to the print stock, as distinguished from a contact printer.
- optical pumping — a method for increasing the number of atoms or molecules occupying higher energy levels by irradiating them with light of the proper frequencies to raise them to those levels.
- 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
- optical tooling — the technique of establishing precise reference lines and planes by means of telescopic sights, especially for the purpose of aligning machinery, machine-shop work, etc.
- opus anglicanum — fine embroidery, esp of church vestments, produced in England c.1200–c.1350; characterized by the rich materials used, esp silver gilt thread
- orange chromide — an Asian cichlid fish, Etropus maculatus, with a brownish-orange spotted body
- orchestrational — Of or pertaining to orchestration.
- order of canada — an order awarded to Canadians for outstanding achievement; established in 1967
- ordinary income — taxable income, as salary and wages, other than capital gains.
- ordnance survey — mapmaking agency
- organic disease — a disease in which there is a structural alteration (opposed to functional disease).
- organic farming — farming with organic methods
- organized chaos — a complex situation or process that appears chaotic while having enough order to achieve progress or goals
- organized crime — illegal activities co-ordinated by groups
- organochlorines — Plural form of organochlorine.
- organomercurial — an organic compound containing mercury
- oriental carpet — Oriental rug.
- orthoboric acid — boric acid (def 1). Compare ortho- (def 2).
- orthodontically — from an orthodontic point of view
- orthopaedic bed — a specially firm bed designed to help correct or ameliorate the discomfort of disorders of the spine and joints
- orthopaedically — in an orthopaedic manner
- orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
- oscars ceremony — a formal annual event in the United States in which small gold statuettes are awarded by the Academy of Motion Picture Arts and Sciences for outstanding achievements in films
- out of practice — If you are out of practice at doing something, you have not had much experience of it recently, although you used to do it a lot or be quite good at it.
- outreach worker — a person who does work designed to help and encourage disadvantaged members of the community
- outside caliper — a caliper whose legs turn inward so that it can measure outside dimensions, as the diameter of a rod.
- oval of cassini — the locus of a point such that the product of the distances from the point to two fixed points is constant.
- over-accentuate — to give emphasis or prominence to.
- over-analytical — pertaining to or proceeding by analysis (opposed to synthetic).
- over-articulate — excessively articulate
- 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-compliance — the act of conforming, acquiescing, or yielding.
- over-cultivated — to prepare and work on (land) in order to raise crops; till.
- over-extraction — an act or instance of extracting: the extraction of a molar.
- over-particular — of or relating to a single or specific person, thing, group, class, occasion, etc., rather than to others or all; special rather than general: one's particular interests in books.
- overachievement — to perform, especially academically, above the potential indicated by tests of one's mental ability or aptitude.
- overapplication — excessive application
- overcapitalized — Simple past tense and past participle of overcapitalize.