16-letter words containing a, b, i, r
- nontransmissible — Not transmissible.
- nontransmittable — Not transmittable.
- norwegian buhund — a slightly-built medium-sized dog of a breed with erect pointed ears and a short thick tail carried curled over its back
- objective danger — a danger, such as a stone fall or avalanche, to which climbing skill is irrelevant
- oblique triangle — any triangle that does not have a right angle (contrasted with right triangle).
- observation deck — an area on a high building that is surrounded with railings or fencing and which provides panoramic views
- observation post — a forward position, often on high ground, from which enemy activity can be observed and, particularly, from which artillery or mortar fire can be directed.
- observation ward — a ward in a hospital where patients are monitored
- observationalist — One who relies on empirical observations.
- observationality — The property of being observational.
- on a trial basis — for the purpose of assessment
- on the breadline — impoverished; living at subsistence level
- one-armed bandit — slot machine (def 1).
- operating budget — money allocated to a project
- orbital velocity — the minimum velocity at which a body must move to maintain a given orbit.
- ordinary jubilee — the celebration of any of certain anniversaries, as the twenty-fifth (silver jubilee) fiftieth (golden jubilee) or sixtieth or seventy-fifth (diamond jubilee)
- organized labour — labour carried out by workers in trade unions, or the workers themselves
- outboard profile — an exterior side elevation of a vessel, showing all deck structures, rigging, fittings, etc.
- overexcitability — to excite too much.
- overurbanization — the act or fact of urbanizing, or taking on the characteristics of a city: Urbanization has led to more air pollution and increasing childhood asthma.
- oxidation number — 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.
- paint-by-numbers — formulaic; showing no original thought or creativity
- paratuberculosis — Johne's disease.
- pass-band filter — band-pass filter
- personal liberty — the liberty of an individual to do his or her will freely except for those restraints imposed by law to safeguard the physical, moral, political, and economic welfare of others.
- philip r. bagley — (person) A pioneer of computer document retrieval. See metadata.
- pietermaritzburg — a province in the E part of the Republic of South Africa. 35,284 sq. mi. (91,886 sq. km). Capital: Pietermaritzburg.
- plant bargaining — a form of bargaining within industry, involving either informal small groups of employees or collective agreements at plant level
- pocket billiards — pool2 (def 1).
- port phillip bay — a bay in SE Australia: the harbor of Melbourne. 31 miles (50 km) long; 25 miles (40 km) wide.
- portable airtime — (communications, wireless) A wireless, digital communications system enabling user-to-user voice communication, "quicknotes", and alphanumeric messaging.
- presentation box — a specially designed and attractive box to hold a product, and make it look more impressive
- pribilof islands — a group of islands in the Bering Sea, off SW Alaska, belonging to the US: the breeding ground of the northern fur seal. Area: about 168 sq km (65 sq miles)
- pro-abolitionist — (especially prior to the Civil War) a person who advocated or supported the abolition of slavery in the U.S.
- public relations — (used with a plural verb) the actions of a corporation, store, government, individual, etc., in promoting goodwill between itself and the public, the community, employees, customers, etc.
- public transport — fare-paying travel
- rack one's brain — If you rack your brains, you try very hard to think of something.
- rainbow lorikeet — a small Australasian parrot, Trichoglossus haematodus, with brightly-coloured plumage
- rainbow seaperch — an embiotocid fish, Hypsurus caryi, living off the Pacific coast of North America, having red, orange, and blue stripes on the body.
- raise an eyebrow — If something causes you to raise an eyebrow or to raise your eyebrows, it causes you to feel surprised or disapproving.
- rambunctiousness — difficult to control or handle; wildly boisterous: a rambunctious child.
- ramen profitable — If a startup business is ramen profitable, it is barely profitable, just enough to allow the founder to live on the cheapest diet.
- random vibration — Random vibration is a type of forced vibration in which the motion follows no regular pattern.
- razor-billed auk — a black and white auk, Alca torda, of the American and European coasts of the northern North Atlantic, having a compressed black bill encircled by a white band.
- re-establishment — the act or an instance of establishing.
- reaction chamber — the chamber in a rocket engine in which the reaction or combustion of fuel occurs
- reaction turbine — a turbine driven by the reactive force of a fluid passing through the rotor blades.
- rectus abdominis — a long flat muscle that extends along the whole length of both sides of the abdomen. It flexes the vertebral column, particularly the lumbar portion; it also tenses the anterior abdominal wall and assists in compressing the abdominal contents
- redbank whiteoak — a city in S Tennessee.
- redistributional — a distribution performed again or anew.