15-letter words that end in or
- juice extractor — device: squeezes juice from fruit
- kelmscott manor — a Tudor house near Lechlade in Oxfordshire: home (1871–96) of William Morris
- knight bachelor — bachelor (def 3).
- lamp-post error — fencepost error
- legal successor — a person or thing that legally follows, esp a person who succeeds another in an office
- legion of honor — a French order of distinction instituted in 1802 by Napoleon with membership being granted for meritorious civil or military services.
- limiting factor — Physiology. the slowest, therefore rate-limiting, step in a process or reaction involving several steps.
- linear operator — a mathematical operator with the property that applying it to a linear combination of two objects yields the same linear combination as the result of applying it to the objects separately.
- literary editor — someone who edits literature and books
- lord chancellor — the highest judicial officer of the British crown: law adviser of the ministry, keeper of the great seal, presiding officer in the House of Lords, etc.
- magnetic mirror — a region in a magnetic bottle where the magnetic field increases abruptly, causing charged particles that enter it to be reflected.
- magnetoreceptor — The part of an organism responsible for magnetoreception.
- make a play for — to act the part of (a person or character) in a dramatic performance; portray: to play Lady Macbeth.
- make it hot for — having or giving off heat; having a high temperature: a hot fire; hot coffee.
- make tracks for — to go or head towards
- malayan camphor — borneol.
- managing editor — an editor assigned to the supervision and coordination of certain editorial activities of a newspaper, magazine, book publishing company, or the like. Abbreviation: M.E., m.e.
- margin of error — statistics: variance
- marine surveyor — a person who carries out surveys of ships to determine seaworthiness, etc
- matron of honor — a married woman acting as the principal attendant of the bride at a wedding.
- mechanoreceptor — any of the sense organs that respond to vibration, stretching, pressure, or other mechanical stimuli.
- mezzanine floor — intermediate level in a building
- modulo operator — (mathematics) (mod) The operator that returns the remainder after integer division of its first argument by its second. Written as "%" in C and some other languages. Where the second argument is a power of two, the result can be calculated much more quickly using bitwise and with the appropriate bit-mask.
- mother superior — the head of a Christian religious community for women.
- motor generator — one or more motors mechanically coupled to one or more generators for converting or transforming electric current into mechanical energy.
- multiple factor — polygene.
- murphy-o'connor — Cormac. born 1932, British cardinal, Archbishop of Westminster (2000–09)
- mushroom anchor — a stockless anchor having a bowlike head, used chiefly for semipermanent moorings.
- neither ... nor — and not
- noise generator — a device used in synthesizers to produce high-frequency sound effects
- non-contributor — a person who contributes money, assistance, etc.
- nuclear reactor — reactor (def 4).
- nutty professor — a professor or academic person who is eccentric or slightly crazy or unusual
- organized labor — all workers who are organized in labor unions.
- pellicle mirror — a fixed mirror in a single-lens reflex camera that reflects some of the light entering the lens to the ground-glass view screen while permitting most of the light to pass through to the film.
- person of color — the quality of an object or substance with respect to light reflected by the object, usually determined visually by measurement of hue, saturation, and brightness of the reflected light; saturation or chroma; hue.
- phototransistor — a transistor that amplifies current induced by photoconductivity.
- polish corridor — a strip of land near the mouth of the Vistula River: formerly separated Germany from East Prussia; given to Poland in the Treaty of Versailles 1919 to provide it with access to the Baltic.
- prestidigitator — sleight of hand; legerdemain.
- preview monitor — (in a television studio control room) a picture monitor used for inspecting a picture source before it is switched to transmission
- printer's error — an error introduced into typeset copy by the compositor, so that the printer cannot charge for correcting it. Abbreviation: P.E., p.e.
- prison governor — the senior administrator or head of a prison
- queen's proctor — a British judiciary officer who may intervene in probate, nullity, or divorce actions when collusion, suppression of evidence, or other irregularities are alleged.
- rearview mirror — a mirror mounted on the side, windshield, or instrument panel of an automobile or other vehicle to provide the driver with a view of the area behind the vehicle.
- reign of terror — a period of the French Revolution, from about March, 1793, to July, 1794, during which many persons were ruthlessly executed by the ruling faction.
- remuera tractor — a four-wheel drive vehicle
- saturated vapor — a vapor whose temperature and pressure are such that any compression of its volume at constant temperature causes it to condense to liquid at a rate sufficient to maintain a constant pressure.
- secondary color — a color, as orange, green, or violet, produced by mixing two primary colors.
- sled cultivator — go-devil (def 5).
- slide projector — device for showing slides