18-letter words containing n, a, i

numerical identity — the relation that holds between two relata when they are the selfsame entity, that is, when the terms designating them have the same reference
numerical taxonomy — classification of organisms by a comparison of large numbers of observable characteristics that are given equal value instead of being weighted according to possible evolutionary significance.
nurse practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
nurse-practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
nursery facilities — places where young children are looked after
oath of allegiance — pledge to one's nation
obedience training — the training of an animal, especially a dog, to obey certain commands.
object-orientation — object-oriented
occasional licence — a licence granted to sell alcohol only at specified times
occupational group — An occupational group is a category used by insurance companies to classify jobs according to how hazardous they are.
octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
oedipus at colonus — a tragedy by Sophocles, written toward the end of his life and produced posthumously in 401? b.c.
of your own making — If you say that something such as a problem you have is of your own making, you mean you have caused or created it yourself.
off-street parking — spaces for cars located on private property rather than on a public street
offensive material — any published or broadcast content (such as articles, photographs, films, or websites) that is likely to be upsetting, insulting, or objectionable to some or most people
office of readings — the first of the canonical hours; matins
oil of catechumens — holy oil used in baptism, the ordination of a cleric, the coronation of a sovereign, or in the consecration of a church.
old low franconian — a Low German dialect of the Franks of the lower Rhine valley before c1100.
on a sticky wicket — in an awkward situation
on automatic pilot — If you are on automatic pilot or on autopilot, you are acting without thinking about what you are doing, usually because you have done it many times before.
on delicate ground — in a situation requiring tact
on that/this score — You can use on that score or on this score to refer to something that has just been mentioned, especially an area of difficulty or concern.
on the danger list — critically ill in hospital
once in a lifetime — extremely rarely
one's native heath — the place of one's birth or childhood
operating expenses — Operating expenses are expenses related to carrying out normal business activities.
operating software — software used in the operation of a computer system, typically by performing such tasks as memory allocation, job scheduling, and input/output control
operation overlord — the codename for the Allied invasion (June 1944) of northern France
operationalisation — Alternative spelling of operationalization.
operationalization — The act or process of operationalizing.
operations manager — business director
optical brightener — an additive that dyes and brightens fabric or paper
optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
optimum population — a population that is sufficiently large to provide an adequate workforce with minimal unemployment
oracle corporation — (company) The world's leading supplier of information management software. The company, worth $2 billion, offers its products, along with related consulting, education and support services in more than 90 countries around the world. Oracle is best known for its database management systems vendor and relational DBMS products. Oracle develops and markets Oracle Media Server and the Oracle7 family of software products for database management; Co-operative Development Environment and Oracle Co-operative Applications Oracle software runs on personal digital assistants, set-top boxs, IBM PCs, workstations, minicomputers, mainframes and massively parallel computers. Oracle bought Sun Microsystems on 2009-04-20. See also Adaptable User Interface, Bookviewer, CASE*Method, Component Integration Laboratories, DDE Manager, Online Media, Oracle Card, Oracle*CASE, siod. Address: Redwood Shores, CA, USA.
oral contraceptive — birth-control pill.
order of magnitude — You can use order of magnitude when you are giving an approximate idea of the amount or importance of something.
organic solidarity — social cohesiveness that is based on division of labor and interdependence and is characteristic of complex, industrial societies.
organization chart — a diagrammatic representation showing how departments or divisions in an organization, as a large corporation, are related to one another along lines of authority.
organized religion — institutionalized religion, usually with a hierarchical clergy and rules to govern the means by which adherents participate
oriental alabaster — alabaster (def 2).
oriental almandine — a variety of corundum resembling almandine in colour and used as a gemstone
oriental cat's-eye — a chatoyant variety of chrysoberyl, used as a gem.
oriental cockroach — a dark-brown cockroach, Blatta orientalis, thought to have originated in Asia but now nearly cosmopolitan in distribution.
oriental scops owl — any of a group of small owls having ear tufts and a whistling call, especially Otus scops (Old World scops owl) and O. sunia (Oriental scops owl)
oriental shorthair — any of a breed of domestic cat, similar to the Siamese but with greenish eyes and often a coat of a solid color
orientation course — induction into sth
orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
oscillating engine — a steam engine having piston rods connected directly to the crankshaft and cylinders oscillating on trunnions.
osteitis deformans — Paget's disease.

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