13-letter words containing a, t, l, o, r
- noncolourfast — (of a fabric) having a colour that tends to fade when washed or worn
- noncreational — Not creational.
- nondeliberate — not deliberate or intentional
- nonelectrical — Not electrical; not operated by electricity.
- nonelementary — relating to a complexity class in computational complexity theory
- nonfilterable — incapable of being filtered
- nonfraudulent — Not fraudulent.
- nonhistorical — Not based on or drawn from history.
- nonhysterical — not hysterical or funny
- nonindustrial — of, pertaining to, of the nature of, or resulting from industry: industrial production; industrial waste.
- nonliturgical — Not liturgical.
- nonobligatory — Not obligatory; not required; optional.
- nonprofitable — Not profitable; not making profit.
- nonregulation — not regulation, not conforming to accepted standards
- nonrelational — Not relational.
- nonretractile — capable of being drawn back or in, as the head of a tortoise; exhibiting the power of retraction.
- nonreturnable — not returnable.
- nonstructural — Not structural; not related to a structure.
- nontheatrical — not relating to the theatre
- normal matrix — a square matrix A for which AA* = A*A, where A* is the Hermitian conjugate of A
- normalisation — Alternative form of normalization.
- normalization — to make normal.
- north babylon — a city on S Long Island, in SE New York.
- north channel — a strait between SW Scotland and NE Ireland. 14 miles (23 km) wide at the narrowest point.
- north holland — a province in W Netherlands. 1163 sq. mi. (3010 sq. km). Capital: Haarlem.
- north sea oil — oil extracted from deposits beneath the North Sea
- northallerton — a market town in N England, administrative centre of North Yorkshire. Pop: 15 517 (2001)
- northeasterly — of or located in the northeast.
- notary public — a public officer or other person authorized to authenticate contracts, acknowledge deeds, take affidavits, protest bills of exchange, take depositions, etc.
- nutritionally — Concerning nutrition.
- objurgatively — In an objurgative or reproving manner.
- 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.
- 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.
- ochlocratical — Pertaining to ochlocracy.
- of all others — above all others
- off the rails — into or in a state of dysfunction or disorder
- old favourite — If you refer to something as an old favourite, you mean that it has been in existence for a long time and everyone knows it or likes it.
- old ritualist — Raskolnik.
- olfactometers — Plural form of olfactometer.
- olfactometric — Of or pertaining to olfactometry.
- on the razzle — out enjoying oneself or celebrating, esp while drinking freely
- one-room flat — a studio flat in which the bedroom, sitting-room and kitchen are all one-room
- open interval — (mathematics) A type of interval (range of numbers) that does not include either of its endpoints. For example, when mixing red and blue paint, the proportion of red lies in the interval 0% to 100% but can't be exactly 0% or 100% or it wouldn't be a mixture.
- openheartedly — Alt form open-heartedly.
- operationally — able to function or be used; functional: How soon will the new factory be operational?
- optical crown — an optical glass of low dispersion and relatively low refractive index. It is used in the construction of lenses
- optical drive — optical disk drive
- optical fiber — optical fibre