19-letter words containing h, o, n, r, i
- mother-in-law plant — a West Indian foliage plant, Dieffenbachia seguine, of the arum family, having yellow-blotched leaves that cause temporary speechlessness when chewed.
- motivation research — the application of the knowledge and techniques of the social sciences, especially psychology and sociology, to understanding consumer attitudes and behavior: used as a guide in advertising and marketing.
- multinomial theorem — an expression of a power of a sum in terms of powers of the addends, a generalization of the binomial theorem.
- multiplexor channel — (MPX) mainframe terminology for a slow peripheral device connection, e.g. for a printer, operator console, or card reader.
- mushroom ventilator — a ventilator having at the top of a vertical shaft a broad rounded cap that can be screwed down to close it.
- nail polish remover — solvent for removing nail polish
- napierian logarithm — natural logarithm.
- nathaniel hawthorne — Nathaniel, 1804–64, U.S. novelist and short-story writer.
- national characters — (character) Characters with accents and other diacritical marks that are used in certain written languages (that are based on the Roman alphabet) but not in others, particularly not in English. A standard list is ISO Latin 1.
- neighbourhood watch — a scheme under which members of a community agree together to take responsibility for keeping an eye on each other's property, as a way of preventing crime
- neuropathologically — In a neuropathologic way.
- neuropsychodynamics — The theoretical synthesis of neuroscience and psychodynamics.
- next door neighbour — a person who lives in the house, flat, etc, next to one's home
- niagara-on-the-lake — a town in SE Ontario, in S Canada, on Lake Ontario, at the mouth of the Niagara River, on the border between Canada and New York.
- no shrinking violet — If you say that someone is no shrinking violet, you mean that they are not at all shy.
- no strings attached — without conditions
- nonthrombocytopenic — Not thrombocytopenic.
- nordrhein-westfalen — German name of North Rhine-Westphalia.
- north pacific ocean — the northern part of the Pacific Ocean, extending from the equator to the Arctic Ocean.
- north-west frontier — the area roughly equivalent to the present North-West Frontier Province of Pakistan, which is the days of the British Raj was regarded as one of the most remote and dangerous outposts of the British Empire
- northern hemisphere — the half of the earth between the North Pole and the equator.
- northwest ordinance — the act of Congress in 1787 providing for the government of the Northwest Territory and setting forth the steps by which its subdivisions might become states.
- northwest territory — region north of the Ohio River, between Pa. & the Mississippi (established 1787): it now forms Ohio, Ind., Ill., Mich., Wis., & part of Minn.
- nothing of the sort — not at all as described
- occupational hazard — a danger or hazard to workers that is inherent in a particular occupation: Silicosis is an occupational hazard of miners.
- old church slavonic — the oldest attested Slavic language, an ecclesiastical language written first by Cyril and Methodius in a Bible translation of the 9th century and continued in use for about two centuries. It represents the South Slavic, Bulgarian dialect of 9th-century Salonika with considerable addition of other South and West Slavic elements. Abbreviation: OCS.
- old english pattern — a spoon pattern having a stem curving backward at the end.
- on one's high horse — acting in an arrogant, haughty, or disdainful manner
- on the baker's list — in good health
- on-the-job training — apprenticeship, learning by doing
- operations research — the analysis, usually involving mathematical treatment, of a process, problem, or operation to determine its purpose and effectiveness and to gain maximum efficiency.
- oriental fruit moth — a moth, Grapholitha molesta, introduced into the U.S. from Asia, the larvae of which infest and feed on the twigs and fruits of peach, plum, and related trees.
- orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
- otorhinolaryngology — otolaryngology.
- out of the ordinary — of no special quality or interest; commonplace; unexceptional: One novel is brilliant, the other is decidedly ordinary; an ordinary person.
- overhead projection — the projection (using an overhead projector) of an enlarged image of a transparency onto a surface above and behind the person using it
- paleoanthropologist — the study of the origins and predecessors of the present human species, using fossils and other remains.
- paradichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
- parathyroid hormone — a polypeptide hormone, produced in the parathyroid glands, that helps regulate the blood levels of calcium and phosphate. Abbreviation: PTH.
- parthenogenetically — development of an egg without fertilization.
- particle technology — Particle technology is knowledge and study which relates to particles, and is used in industry.
- parting of the ways — When there is a parting of the ways, two or more people or groups of people stop working together or travelling together.
- phenanthrenequinone — a yellowish-orange, crystalline, water-insoluble solid, C 1 4 H 8 O 2 , used chiefly in organic synthesis and the manufacture of dyes.
- phenylpropanolamine — a substance, C 9 H 1 3 NO, related to ephedrine and amphetamine, available in various popular nonprescription diet aids as an appetite suppressant.
- phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
- philosopher's stone — a substance sought by alchemists that would be capable of transmuting baser metals into gold or silver and of prolonging life.
- philosophers' stone — a substance sought by alchemists that would be capable of transmuting baser metals into gold or silver and of prolonging life.
- photodisintegration — the disintegration of a nucleus, induced by its absorption of a photon.
- photopolymerization — polymerization induced by light.
- photoreconnaissance — reconnaissance using aerial photography.