17-letter words containing n, o, r, g

ocean engineering — the branch of engineering that deals with the development of equipment and techniques for the exploration of the ocean floor and exploitation of its resources.
oceanographically — In terms of oceanography.
old age pensioner — An old age pensioner is a person who is old enough to receive an pension from their employer or the government.
on a razor's edge — in an acute dilemma
on speaking terms — the act, utterance, or discourse of a person who speaks.
on the right foot — in an auspicious manner
on the wrong foot — in an inauspicious manner
on the wrong tack — a short, sharp-pointed nail, usually with a flat, broad head.
on-street parking — parking (of a car, vehicle, etc) that is or is allowed to be done on a street
once over lightly — a hasty or superficial treatment, look, examination, etc.; once-over: The maid gave the room the once-over-lightly.
once-over-lightly — a hasty or superficial treatment, look, examination, etc.; once-over: The maid gave the room the once-over-lightly.
open-end mortgage — a mortgage agreement against which new sums of money may be borrowed under certain conditions.
opening arguments — the statements or arguments provided by lawyers at the beginning of a trial
operating theatre — An operating theatre is a special room in a hospital where surgeons carry out medical operations.
orange flower oil — neroli oil.
orange free state — a province in central Republic of South Africa: a Boer republic 1854–1900; a British colony (Orange River Colony, ) 1900–10. 49,647 sq. mi. (128,586 sq. km). Capital: Bloemfontein.
oregon crab apple — a shrub or small tree, Malus fusca, of the rose family, of the northwestern coast of North America, having hairy leaves, white flowers, and yellow or green oblong fruit.
organ-pipe cactus — a treelike or columnar cactus, Lemaireocereus marginatus, of Mexico, having a central, erect spine surrounded by spreading spines in clusters of five to eight, and funnel-shaped, brownish-purple flowers.
organic chemistry — the branch of chemistry, originally limited to substances found only in living organisms, dealing with the compounds of carbon.
organic psychosis — a severe mental illness produced by damage to the brain, as a result of poisoning, alcoholism, disease, etc
organized ferment — ferment (def 1).
organized militia — a former military organization functioning under both state and federal authority.
organophosphorous — Misspelling of organophosphorus.
origin of species — (On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) a treatise (1859) by Charles Darwin setting forth his theory of evolution.
orthogonal matrix — a matrix that is the inverse of its transpose so that any two rows or any two columns are orthogonal vectors
orthogonalization — (mathematics) The process of converting a set of functions or vectors into orthogonal ones.
osculating circle — circle of curvature.
otolaryngological — Pertaining to otolaryngology.
otolaryngologists — Plural form of otolaryngologist.
outline agreement — a contract, etc, setting out the preliminary terms or guidelines for an agreement; a preliminary agreement
overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
overnight success — sth or sb suddenly popular
oversquare engine — An oversquare engine is an engine which has a cylinder bore that is larger than its stroke.
paleoanthropology — the study of the origins and predecessors of the present human species, using fossils and other remains.
parathyroid gland — any of several small oval glands usually lying near or embedded in the thyroid gland.
passenger station — a station used by passengers
perforation gauge — a marked ruler used to measure the number of perforations per unit length along the borders of a stamp.
performance drugs — the drugs that are taken illegally by athletes to enhance their sporting performance
permutation group — a mathematical group whose elements are permutations and in which the product of two permutations is the same permutation as is obtained by performing them in succession.
persona non grata — a person who is not welcome: He has become persona non grata in our club since his angry outburst.
personnel manager — head of Human Resources department
phantom pregnancy — the occurrence of signs of pregnancy, such as enlarged abdomen and absence of menstruation, when no embryo is present, due to hormonal imbalance
philosopher kings — the Platonic ideal of a ruler, philosophically trained and enlightened.
phonological rule — an operation in generative phonology that substitutes one sound or class of sounds for another in a phonological derivation.
pillion passenger — a person who travels in a seat or place behind the rider of a motorcycle, scooter, horse, etc
pioneering spirit — a willingness to endure hardship in order to explore new places or try out new things
pitching rotation — the regular, scheduled succession of starting pitchers designated by a manager: a four-man pitching rotation in September.
pointer swizzling — swizzle
poison-arrow frog — a small, bright-colored terrestrial frog of the family Dendrobatidae, of Central and South American rain forests, that secretes a virulent poison from its skin, once used on the tips of Indian hunting arrows.
polarizing filter — a camera lens filter used to control the plane of polarization of light entering the lens.

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