17-letter words containing o, p, e, n, a
- olympic peninsula — a large peninsula of W Washington
- omphalomesenteric — (anatomy) Of or pertaining to the umbilicus and mesentery.
- on speaking terms — the act, utterance, or discourse of a person who speaks.
- 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-parent family — A one-parent family is a family that consists of one parent and his or her children living together.
- 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".
- onomatopoetically — the formation of a word, as cuckoo, meow, honk, or boom, by imitation of a sound made by or associated with its referent.
- open-channel flow — Open-channel flow is a liquid flow in a channel, which has a free liquid surface.
- 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.
- 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.
- optical carrier n — (networking) (OC-n) A SONET rate of n times 51.84 megabits per second.
- 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.
- over-appreciation — gratitude; thankful recognition: They showed their appreciation by giving him a gold watch.
- over-compensation — a pronounced striving to neutralize and conceal a strong but unacceptable character trait by substituting for it an opposite trait.
- pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
- palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
- palaeoethnobotany — the study of fossil seeds and grains to further archaeological knowledge, esp of the domestication of cereals
- paleoanthropology — the study of the origins and predecessors of the present human species, using fossils and other remains.
- paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
- palette of narmer — a king of Egypt identified by modern scholars as the Menes of tradition and depicted as the unifier of Upper and Lower Egypt on an ancient slate tablet (Narmer Palette or Palette of Narmer) c3200 b.c. with relief carvings on both sides.
- pan potentiometer — a control on a stereo sound mixing desk by means of which the relative levels in right- and left-hand channels can be adjusted and hence the apparent position of the recorded or broadcast sound source within the stereo panorama can be controlled
- panama canal zone — Canal Zone.
- papanicolaou test — Pap test.
- parents anonymous — (in Britain) an association of local voluntary self-help groups offering help through an anonymous telephone service to parents who fear they will injure their children, or who have other problems in managing their children
- parts of kesteven — an area in E England constituting a former administrative division of Lincolnshire
- parts per million — the number of units (of a substance) present in a million units of another substance
- passenger station — a station used by passengers
- passive obedience — unquestioning obedience to authority
- pay someone's way — to pay someone's share of the expenses
- peloponnesian war — a war between Athens and Sparta, 431–404 b.c., that resulted in the transfer of hegemony in Greece from Athens to Sparta.
- penalty shoot-out — In football, a penalty shoot-out is a way of deciding the result of a game that has ended in a draw. Players from each team try to score a goal in turn until one player fails to score and their team loses the game.
- pentachlorophenol — a white, crystalline, water-insoluble powder, C 6 Cl 5 OH, used chiefly in fungicides, disinfectants, and wood preservatives.
- pentylenetetrazol — a white, crystalline, bitter-tasting, water-soluble powder, C 6 H 1 0 N 4 , used as a respiratory and circulatory stimulant, especially in the treatment of barbiturate poisoning, and to induce a convulsive state in the treatment of certain mental diseases.
- per capita income — the total income of an area or country divided by the number of people in that area or country
- per procurationem — by one acting as an agent; by proxy.
- perforation gauge — a marked ruler used to measure the number of perforations per unit length along the borders of a stamp.
- performance bonus — a monetary bonus paid to staff who have performed well in their job
- performance drugs — the drugs that are taken illegally by athletes to enhance their sporting performance
- peripheral vision — all that is visible to the eye outside the central area of focus; side vision.
- permanent account — A permanent account is an account which carries its balance and is kept open from year to year.
- 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.
- pernicious anemia — Pernicious anemia is a very severe blood disease.
- persona non grata — a person who is not welcome: He has become persona non grata in our club since his angry outburst.
- personal computer — a compact computer that uses a microprocessor and is designed for individual use, as by a person in an office or at home or school, for such applications as word processing, data management, financial analysis, or computer games. Abbreviation: PC.