16-letter words containing s, a, o
- 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.
- ophthalmologists — Plural form of ophthalmologist.
- ophthalmoparesis — (medicine) A partial or complete paralysis of the extraocular muscles which are responsible for eye movements.
- optical illusion — something that deceives by producing a false or misleading impression of reality.
- optical scanning — the process of interpreting data in printed, handwritten, bar-code, or other visual form by a device (optical scanner or reader) that scans and identifies the data.
- optical tweezers — a laser device used to study, manipulate, or trap a microscopic object, as a microorganism or cell, with nanometer precision.
- 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.
- organ transplant — an operation in which an organ is transplanted from a donor
- organophosphates — Plural form of organophosphate.
- organophosphorus — Denoting synthetic organic compounds containing phosphorus, especially pesticides and nerve gases of this kind.
- orthodox judaism — Judaism as observed by Orthodox Jews.
- orthodoxy sunday — a solemn festival held on the first Sunday of Lent (Orthodoxy Sunday) commemorating the restoration of the use of icons in the church (a.d. 842) and the triumph over all heresies.
- orthosympathetic — Of or pertaining to the sympathetic component of the autonomic nervous system.
- 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.
- osteoarchaeology — the branch of archaeology that deals with the study of bones found at archaeological sites
- otolaryngologist — Otorhinolaryngologist.
- out on one's ear — dismissed unceremoniously
- outsmart oneself — to have one's efforts at cunning or cleverness result in one's own disadvantage
- ovals of cassini — the locus of a point x, whose distance from two fixed points, a and b, is such that |x–a| |x–b| is a constant
- 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.
- padded shoulders — (on a garment) shoulders lined, stuffed, or filled out with soft material, esp in order to give them a higher or wider shape
- pair of scissors — two-bladed cutting tool
- 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.
- parasol mushroom — a common edible field mushroom, Macrolepiota (Lepiota) procera, having a light-brown, scaly cap.
- paratuberculosis — Johne's disease.
- parkerhouse roll — a yeast roll shaped by folding over a flat, round piece of buttered dough
- parochial school — a primary or secondary private school supervised by a religious organization, especially a Roman Catholic day school affiliated with a parish or a holy order.
- parrot's-feather — a South American water milfoil, Myriophyllum aquaticum, having hairlike pinnate leaves, widely cultivated as an aquarium plant.
- 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
- pascal's limacon — limaçon.
- pascal's theorem — the theorem that the lines joining adjacent vertices of a hexagon intersect the same straight line if alternate vertices lie on two intersecting straight lines.
- passage to india — a novel (1924) by E. M. Forster.
- passenger pigeon — an extinct pigeon, Ectopistes migratorius, once found in great numbers in North America, noted for its sustained migratory flights.
- passport control — identity check at airport, etc.
- past progressive — a verb form consisting of an auxiliary be in the past tense followed by a present participle and used especially to indicate that an action or event was incomplete or in progress at a point of reference in the past, as was sleeping in I was sleeping when the phone rang.