17-letter words containing f, t

natural frequency — the frequency at which a system vibrates when set in free vibration
neck of the woods — the part of the body of an animal or human being that connects the head and the trunk.
negative feedback — Electronics. the process of returning part of the output of a circuit, system, or device to the input, either to oppose the input (negative feedback) or to aid the input (positive feedback) acoustic feedback.
negative transfer — the obstruction of or interference with new learning because of previous learning, as when a U.S. tourist in England learns to drive on the left side of the road.
neurofibromatosis — a dominantly inherited genetic disorder characterized by flat brown patches on the skin, neurofibromas of the skin and internal organs, and in some cases skeletal deformity.
newfoundland time — a form of civil time observed on the island of Newfoundland, one and one-half hours later than Eastern time and a half hour later than Atlantic time.
night after night — every night or for many successive nights
nightshade family — the plant family Solanaceae, characterized by herbaceous plants, trees, shrubs, and vines having alternate, simple or pinnate leaves, conspicuous flowers, and fruit in the form of a berry or capsule, and including belladonna, eggplant, nightshade, peppers of the genus Capsicum, petunia, potato, tobacco, and tomato.
nitrogen fixation — any process of combining atmospheric nitrogen with other elements, either by chemical means or by bacterial action: used chiefly in the preparation of fertilizers, industrial products, etc.
non-certification — the act of certifying.
non-confrontation — an act of confronting.
non-profit-making — A non-profit-making organization or charity is not run with the intention of making a profit.
non-proliferation — Non-proliferation is the limiting of the production and spread of something such as nuclear or chemical weapons.
non-reinforcement — the act of reinforcing.
noninertial frame — a frame of reference that moves with the object, so that the moving object appears to violate Newton's laws of motion since it accelerates despite having no horizontal forces on it.
nonteaching staff — employees within an academic or vocational environment whose jobs do not involve teaching
north frigid zone — the part of the earth's surface between the Arctic Circle and the North Pole.
northern kingfish — a croaker, Menticirrhus saxatilis, inhabiting Atlantic coastal waters of the U.S.
northern studfish — See under studfish.
not lift a finger — any of the terminal members of the hand, especially one other than the thumb.
not one's idea of — not what one regards as (hard work, a holiday, etc)
not spare oneself — to exert oneself to the full
not the full quid — mentally subnormal
not think much of — be unimpressed by
nyquist frequency — (DSP) The highest frequency that can be represented in a digital signal of a specified sampling frequency. It is equal to one-half of the sampling rate. See Nyquist Theorem.
object identifier — (programming) (OID) Generally an implementation-specific integer or pointer that uniquely identifies an object.
odds-on favourite — a person, team, horse, etc that is regarded as the most likely to win a competition
odour of sanctity — sanctimoniousness
of its own accord — If something happens of its own accord, it seems to happen by itself, without anyone making it happen.
of the old school — If you approve of someone because they have good qualities that used to be more common in the past, you can describe them as one of the old school.
off duty, on duty — If someone such as a policeman or a nurse is off duty, they are not working. If someone is on duty, they are working.
off one's own bat — If someone does something off their own bat, they do it without anyone else suggesting it.
off one's trolley — trolley car.
off-site facility — An off-site facility is a facility which is not at the main industrial or commercial site.
off-year election — (in the US) an election held in a year when a presidential election does not take place
office automation — a method or system of using automated or electronic equipment, as word processors and computers, in the operations of an office.
oil of turpentine — a colorless, flammable, volatile essential oil having a penetrating odor and a pungent, bitter taste, obtained from turpentine oleoresin by distillation: used in paints and varnishes, and in medicine as a carminative, vermifuge, expectorant, rubefacient, and, formerly, as a diuretic.
on (or off) duty — at (or temporarily relieved from) one's work, duty, etc.
on the face of it — the front part of the head, from the forehead to the chin.
on the foundation — an endowment or legacy for the perpetual support of an institution such as a school or hospital
on the front foot — at an advantage, outclassing and outmanoeuvring one's opponents
on the half shell — served raw, with seasonings, on a half shell
on the home front — domestically
on the off chance — the absence of any cause of events that can be predicted, understood, or controlled: often personified or treated as a positive agency: Chance governs all.
on the off-chance — If you do something on the off-chance, you do it because you hope that it will succeed, although you think that this is unlikely.
on the right foot — in an auspicious manner
on the wrong foot — in an inauspicious manner
one for the books — a handwritten or printed work of fiction or nonfiction, usually on sheets of paper fastened or bound together within covers.
one of these days — at some future time
one size fits all — (of clothing) designed to fit people of a wide range of sizes.

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