15-letter words containing t, i, o, u
- obituary column — the division of a publication reserved for obituaries
- oblique section — a representation of an object as it would appear if cut by a plane that is other than parallel or perpendicular to its longest axis.
- obstructionists — Plural form of obstructionist.
- obstructiveness — The characteristic of being obstructive.
- obtuse triangle — a triangle with one obtuse angle.
- occulting light — a beacon having a light covered briefly at regular intervals.
- octanitrocubane — (organic compound) A high explosive derived from cubane.
- odd permutation — a permutation of a set of n elements, x 1 , x 2 , …, xn, which permutes the product of all differences of the form (xi – xj), where i is less than j, into the negative of the product.
- oligonucleotide — a chain of a few nucleotides.
- omnibus edition — a television or radio programme consisting of two or more programmes broadcast earlier in the week
- omnium gatherum — a miscellaneous collection.
- omnium-gatherum — a miscellaneous collection.
- on the qui vive — on the qui vive, on the alert; watchful: Special guards were on the qui vive for trespassers.
- open university — higher education by correspondence
- open-cut mining — mining by excavating from the surface
- opisthognathous — having receding jaws.
- opposite number — counterpart; equivalent: New members with an interest in folk art will find their opposite numbers in the association's directory.
- 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.
- ornithorhynchus — the platypus.
- ortho-toluidine — Chemistry. a light-yellow, very slightly water-soluble liquid, C 7 H 9 N, the ortho isomer of toluidine: used in the manufacture of dyes, saccharin, and other organic compounds, and in textile printing processes.
- ostreiculturist — a person who breeds oysters
- out in the cold — having a relatively low temperature; having little or no warmth: cold water; a cold day.
- out in the open — knowledge: public
- out of business — If a shop or company goes out of business or is put out of business, it has to stop trading because it is not making enough money.
- 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.
- out of sight of — not in sight
- out of thin air — suddenly and unexpectedly
- out of training — become unfit
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- outer barrister — a barrister belonging to the outer bar.
- outline drawing — a drawing consisting only of external lines
- 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.
- outside the box — a container, case, or receptacle, usually rectangular, of wood, metal, cardboard, etc., and often with a lid or removable cover.
- outstandingness — prominent; conspicuous; striking: an outstanding example of courage.
- outward-looking — looking beyond oneself; open-minded and reaching out to other people, organizations, etc
- over-articulate — excessively articulate
- over-cultivated — to prepare and work on (land) in order to raise crops; till.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- 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.
- over-population — to fill with an excessive number of people, straining available resources and facilities: Expanding industry has overpopulated the western suburbs.
- over-regulation — a law, rule, or other order prescribed by authority, especially to regulate conduct.
- over-solicitous — too solicitous: oversolicitous concerning one's health.
- overcommunicate — to communicate excessively
- overconsumption — the act of consuming, as by use, decay, or destruction.
- overcultivation — the act or art of cultivating.
- overexpenditure — the act of expending something, especially funds; disbursement; consumption.
- 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.
- overutilization — to put to use; turn to profitable account: to utilize a stream to power a mill.