17-letter words containing s, a, t, n, i

nuclear chemistry — the branch of chemistry concerned with nuclear reactions
nuclear scientist — a scientist who studies nuclear physics
nursery education — education provided at a school for young children, usually from three to five years old
objectionableness — The quality of being objectionable.
observation tower — lookout, observation point
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.
old south arabian — a group of four closely related Semitic languages, having a writing system and used from about the eighth to the fifth centuries b.c. in the southern part of Arabia.
old spanish trail — an overland route from Santa Fe, N. Mex., to Los Angeles, Calif., first marked out in 1776 by Spanish explorers and missionaries.
olympic mountains — a mountain range in NW Washington: part of the Coast Range. Highest peak: Mount Olympus, 2427 m (7965 ft)
omphalomesenteric — (anatomy) Of or pertaining to the umbilicus and mesentery.
on someone's tail — following or shadowing someone closely
on speaking terms — the act, utterance, or discourse of a person who speaks.
on the heavy side — tending to be too heavy
on the pig's back — successful; established
on-street parking — parking (of a car, vehicle, etc) that is or is allowed to be done on a street
one size fits all — (of clothing) designed to fit people of a wide range of sizes.
one-size-fits-all — (of clothing) designed to fit people of a wide range of sizes.
one-time password — (security) (OTP) A security system that requires a new password every time a user authenticates themselves, thus protecting against an intruder replaying an intercepted password. OTP generates passwords using either the MD4 or MD5 hashing algorithms. The equivalent term "S/Key", developed by Bellcore, is a trademark of Telcordia Technologies, so the name OTP is used increasingly. See RFC 1760 - "The S/KEY One-Time Password System" and RFC 1938 - "A One-Time Password System".
opening arguments — the statements or arguments provided by lawyers at the beginning of a trial
operation sealion — the codename for Hitler's proposed invasion (1940) of Great Britain
operations centre — a centre where activities of a business, organization, etc, are administrated and take place
opisthobranchiate — (zoology) Of or pertaining to the Opisthobranchiata.
opportunistically — adhering to a policy of opportunism; practicing opportunism.
optical astronomy — the branch of observational astronomy using telescopes to observe or photograph celestial objects in visible light.
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.
osculating circle — circle of curvature.
otolaryngologists — Plural form of otolaryngologist.
otto von bismarck — Otto von [ot-oh von;; German aw-toh fuh n] /ˈɒt oʊ vɒn;; German ˈɔ toʊ fən/ (Show IPA), 1815–98, German statesman: first chancellor of modern German Empire 1871–90.
over-compensation — a pronounced striving to neutralize and conceal a strong but unacceptable character trait by substituting for it an opposite trait.
over-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
papanicolaou test — Pap test.
paralysis agitans — Parkinson's disease
paratungstic acid — an oxyacid acid of tungsten. Formula: H10W12O14
particle kinetics — Particle kinetics is the study of the movement of particles and the forces that cause this movement.
parts per million — the number of units (of a substance) present in a million units of another substance
pascal's triangle — a triangular arrangement of the binomial coefficients of the expansion (x + y) n for positive integral values of n.
pashmina politics — the adoption of political policies immediately after they have gone out of fashion
passenger station — a station used by passengers
passenger traffic — number of passengers
passive restraint — a safety device, as an air bag or special seat belt, that is activated automatically to protect an automobile passenger at the moment of impact when a collision occurs.
pasteur institute — an organization in Paris that was founded in 1887. It does research on micro-organisms and diseases
paternalistically — the system, principle, or practice of managing or governing individuals, businesses, nations, etc., in the manner of a father dealing benevolently and often intrusively with his children: The employees objected to the paternalism of the old president.
penitential psalm — any of the Psalms (the 6th, 32nd, 38th, 51st, 102nd, 130th, and 143rd) that give expression to feelings of penitence and that are used in various Christian liturgical services.
perpetual spinach — a variety of spinach that keeps producing edible leaves
personal distance — personal space.

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