13-letter words containing t, o, r, i, e
- operationally — able to function or be used; functional: How soon will the new factory be operational?
- operativeness — (uncountable) The state or quality of being operative.
- opportunities — Plural form of opportunity.
- optical drive — optical disk drive
- optical fiber — optical fibre
- optical fibre — (communications) (fibre optics, FO, US "fiber", light pipe) A plastic or glass (silicon dioxide) fibre no thicker than a human hair used to transmit information using infra-red or even visible light as the carrier (usually a laser). The light beam is an electromagnetic signal with a frequency in the range of 10^14 to 10^15 Hertz. Optical fibre is less susceptible to external noise than other transmission media, and is cheaper to make than copper wire, but it is much more difficult to connect. Optical fibres are difficult to tamper with (to monitor or inject data in the middle of a connection), making them appropriate for secure communications. The light beams do not escape from the medium because the material used provides total internal reflection. See also FDDI, Optical Carrier n, SONET.
- orbital index — the ratio of the maximum breadth to the maximum height of the orbital cavity multiplied by 100.
- 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.
- orchiectomies — Plural form of orchiectomy.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organogenetic — Relating to organogenesis.
- orientalizing — Present participle of orientalize.
- orientational — Of or pertaining to orientation.
- orifice meter — a plate having a central hole that is placed across the flow of a liquid, usually between flanges in a pipeline. The pressure difference generated by the flow velocity through the hole enables the flow quantity to be measured
- originalities — Plural form of originality.
- originatively — in an originative manner
- ornamentalism — the desire or tendency to feature ornament in the design of buildings, interiors, furnishings, etc.
- ornamentalist — A person who ornaments.
- ornamentality — used or grown for ornament: ornamental plants.
- ornamentation — the act of ornamenting.
- ornithichnite — (paleontology) The footmark of a bird occurring in strata of stone.
- orthocephalic — having a medium or intermediate relation between the height of the skull and the breadth or length.
- orthoepically — In terms of correct pronunciation.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthogonalize — to make (vectors, functions, etc.) orthogonal.
- orthographies — Plural form of orthography.
- orthographize — to spell correctly or according to the rules of orthography.
- orthopaedical — Pertaining to orthopaedics; characteristic of orthopaedia.
- orthosilicate — a silicate mineral
- oscillometric — an instrument for measuring oscillations, especially those of the arterial pulse.
- osteofibrosis — loss of calcium from the bones, causing them to become fragile
- osteopetrosis — any of several hereditary diseases characterized by increased bone density.
- ostreiculture — the breeding of oysters
- otherworldish — characterized by otherworldliness
- out of kilter — If one thing is out of kilter with another, the first thing does not agree with or fit in with the second.
- outgeneraling — Present participle of outgeneral.
- outlaw regime — a dangerously unpredictable political regime, as of a country, state, etc, which disregards international law or diplomacy
- outlaw strike — wildcat strike.
- outperforming — Present participle of outperform.
- outprocessing — to end a military tour of duty, accompanied by necessary paperwork: All enlisted soldiers out-process as a class.
- outrecuidance — (archaic) Presumption, arrogance, self-conceit.
- outside-right — a footballer who plays on the outside right wing of the field
- outstretching — Present participle of outstretch.
- ovariectomies — Plural form of ovariectomy.
- ovariectomize — (transitive) To remove the ovaries from.
- over the hill — a natural elevation of the earth's surface, smaller than a mountain.