16-letter words containing a, n, o, e, s

observation post — a forward position, often on high ground, from which enemy activity can be observed and, particularly, from which artillery or mortar fire can be directed.
observation ward — a ward in a hospital where patients are monitored
observationalist — One who relies on empirical observations.
observationality — The property of being observational.
occasional table — a small table with no regular use
odds are against — If you say that the odds are against something or someone, you mean that they are unlikely to succeed.
offensive weapon — an instrument designed to be used in attack, or an object which may be used in attack
ohmic resistance — resistance (def 3a).
oil storage tank — a very large industrial container where petroleum is stored
okefenokee swamp — a large wooded swamp area in SE Georgia.
on a world scale — in a way that involves the whole world
on her beam-ends — (of a vessel) heeled over through an angle of 90°
on its last legs — about to fail
on the beam-ends — tipping so far to the side as to be in danger of capsizing
on the safe side — as a precaution
on the same page — one side of a leaf of something printed or written, as a book, manuscript, or letter.
on the scrapheap — (of people or things) having outlived their usefulness
one and the same — When two or more people or things are thought to be separate and you say that they are one and the same, you mean that they are in fact one single person or thing.
one's cup of tea — the dried and prepared leaves of a shrub, Camellia sinensis, from which a somewhat bitter, aromatic beverage is prepared by infusion in hot water.
one's salad days — If you refer to your salad days, you are referring to a period of your life when you were young and inexperienced.
one-party system — a political system in which only one party is allowed
one/a false move — If you say that one false move will cause a disaster, you mean that you or someone else must not make any mistakes because the situation is so difficult or dangerous.
online thesaurus — a thesaurus or dictionary of words with the same or nearly the same meanings, or synonyms, and their opposites, or antonyms, such as Thesaurus.com, available on the Internet or the World Wide Web, accessed through a web browser, and used by entering a query term into a search box on the site. An online thesaurus provides immediate electronic access to lists of alternate terms for the queried word, covering its various shades of meaning: This online thesaurus showed me that smart, as an adjective, not only means intelligent, but also stylish, or lively, and gave long lists of other words for each meaning.
open parenthesis — left parenthesis
open scholarship — a scholarship which anyone can apply for
operating system — (operating system) (OS) The low-level software which handles the interface to peripheral hardware, schedules tasks, allocates storage, and presents a default interface to the user when no application program is running. The OS may be split into a kernel which is always present and various system programs which use facilities provided by the kernel to perform higher-level house-keeping tasks, often acting as servers in a client-server relationship. Some would include a graphical user interface and window system as part of the OS, others would not. The operating system loader, BIOS, or other firmware required at boot time or when installing the operating system would generally not be considered part of the operating system, though this distinction is unclear in the case of a rommable operating system such as RISC OS. The facilities an operating system provides and its general design philosophy exert an extremely strong influence on programming style and on the technical cultures that grow up around the machines on which it runs. Example operating systems include 386BSD, AIX, AOS, Amoeba, Angel, Artemis microkernel, BeOS, Brazil, COS, CP/M, CTSS, Chorus, DACNOS, DOSEXEC 2, GCOS, GEORGE 3, GEOS, ITS, KAOS, Linux, LynxOS, MPV, MS-DOS, MVS, Mach, Macintosh operating system, Microsoft Windows, MINIX, Multics, Multipop-68, Novell NetWare, OS-9, OS/2, Pick, Plan 9, QNX, RISC OS, STING, System V, System/360, TOPS-10, TOPS-20, TRUSIX, TWENEX, TYMCOM-X, Thoth, Unix, VM/CMS, VMS, VRTX, VSTa, VxWorks, WAITS.
operating-system — the collection of software that directs a computer's operations, controlling and scheduling the execution of other programs, and managing storage, input/output, and communication resources. Abbreviation: OS.
orange men's day — July 12, an annual celebration in Northern Ireland and certain cities having a large Irish section, especially Liverpool, to mark both the victory of William III over James II at the Battle of the Boyne, July 1, 1690, and the Battle of Augbrim, July 12, 1690.
organophosphates — Plural form of organophosphate.
osculating plane — the plane containing the circle of curvature of a point on a given curve.
ostend manifesto — a declaration (1854) issued from Ostend, Belgium, by the U.S. ministers to England, France, and Spain, stating that the U.S. would be justified in seizing Cuba if Spain did not sell it to the U.S.
ostentatiousness — characterized by or given to pretentious or conspicuous show in an attempt to impress others: an ostentatious dresser.
out on one's ear — dismissed unceremoniously
outsmart oneself — to have one's efforts at cunning or cleverness result in one's own disadvantage
over the transom — by unsolicited submission, as to a publisher
over-sentimental — expressive of or appealing to sentiment, especially the tender emotions and feelings, as love, pity, or nostalgia: a sentimental song.
over-speculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
overcautiousness — the quality or state of being too cautious, wary, or careful
overcompensating — Present participle of overcompensate.
overcompensation — a pronounced striving to neutralize and conceal a strong but unacceptable character trait by substituting for it an opposite trait.
overcompensatory — a pronounced striving to neutralize and conceal a strong but unacceptable character trait by substituting for it an opposite trait.
overenthusiastic — full of or characterized by enthusiasm; ardent: He seems very enthusiastic about his role in the play.
pacific sturgeon — a dark gray sturgeon, Acipenser transmontanus, inhabiting marine and fresh waters along the northwestern coast of North America, valued as a food and sport fish.
pairs tournament — an event in a sport such as tennis or darts open to pairs of competitors
palmerston north — a city in New Zealand, in the S North Island on the Manawatu River. Pop: 78 100 (2004 est)
panel discussion — a formal discussion before an audience for which the topic, speakers, etc., have been selected in advance.
panoramic screen — a very wide screen, as of a television, etc
paraprofessional — a person trained to assist a doctor, lawyer, teacher, or other professional, but not licensed to practice in the profession.
parser generator — A program which takes a formal description of a grammar (e.g. in BNF) and outputs source code for a parser which will recognise valid strings obeying that grammar and perform associated actions. Unix's yacc is a well known example.
parts of lindsey — an area in E England constituting a former administrative division of Lincolnshire

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