15-letter words containing p, r, a, o
- non-overlapping — to lap over (something else or each other); extend over and cover a part of; imbricate.
- non-penetrative — (of sexual activity) not involving penetration by the penis
- non-replaceable — to assume the former role, position, or function of; substitute for (a person or thing): Electricity has replaced gas in lighting.
- non-repudiation — the act of repudiating.
- non-suppurative — suppurating; characterized by suppuration.
- nonbiographical — not biographical, not relating to biography or events in a person's life
- noncatastrophic — of the nature of a catastrophe, or disastrous event; calamitous: a catastrophic failure of the dam.
- noncompensatory — serving to compensate, as for loss, lack, or injury.
- noncontemporary — not contemporary
- nondepartmental — not limited to or related to a specific department
- nondisciplinary — of, for, or constituting discipline; enforcing or administering discipline: disciplinary action.
- nonexperimental — pertaining to, derived from, or founded on experiment: an experimental science.
- nonincorporated — Not incorporated.
- nonmetaphorical — not metaphorical; literal
- nonmetropolitan — Not metropolitan.
- nonpartisanship — The quality of not being partisan, of remaining politically independent.
- nonphotographic — not involving photographic equipment or techniques
- nonprecedential — Not precedential.
- nonprofessional — not a member of or trained in a specific profession.
- nonprofessorial — not professorial
- nonproportional — having due proportion; corresponding.
- nonpsychiatrist — a person who is not a psychiatrist
- northern paiute — a member of an American Indian people of Nevada, Oregon, and California, allied to the Paiute.
- northern parula — any of several American wood warblers of the genus Parula, especially P. americana (northern parula) having bluish plumage with a yellow throat and breast.
- notour bankrupt — a bankrupt who has failed to discharge his or her debts within the days of grace allowed by the court
- nuclear-powered — powered by nuclear energy
- nullarbor plain — a treeless, semiarid area of S Australia, contiguous to the Great Australian Bight.
- odd permutation — a permutation of a set of n elements, x 1 , x 2 , …, xn, which permutes the product of all differences of the form (xi – xj), where i is less than j, into the negative of the product.
- oil tanker pier — An oil tanker pier is a structure over water where oil tankers can stop and load or unload.
- olbers' paradox — the paradox that if the universe consisted of an infinite number of stars equally distributed through space, then every line of sight would come from a star and the night sky would glow uniformly, which is observationally not true.
- onward progress — progress that advances or improves (a situation, etc)
- operating cycle — the period of time between starting a business and making a profit
- operating table — table on which surgery is performed
- operationalised — Simple past tense and past participle of operationalise.
- operationalized — Simple past tense and past participle of operationalize.
- operations room — a room from which all the operations of a military, police, or other disciplined activity are controlled
- optical printer — a film printer used in making optical effects, consisting basically of a camera that photographs the image with special lenses to enlarge, reduce, distort, etc., and a projector that transfers the image to the print stock, as distinguished from a contact printer.
- optical scanner — 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 storage — optical disk drive
- organophosphate — Biochemistry. any of a variety of organic compounds that contain phosphorus and often have intense neurotoxic activity: originally developed as nerve gases, now widely used as insecticides and fire retardants.
- oriental carpet — Oriental rug.
- ornithodelphian — of or relating to mammals of the class Ornithodelphia
- orphaned i-node — (operating system) /or'f*nd i:'nohd/ [Unix] 1. A file that retains storage but no longer appears in the directories of a file system.
- orthopaedic bed — a specially firm bed designed to help correct or ameliorate the discomfort of disorders of the spine and joints
- orthopaedically — in an orthopaedic manner
- orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
- out of practice — If you are out of practice at doing something, you have not had much experience of it recently, although you used to do it a lot or be quite good at it.
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- outside caliper — a caliper whose legs turn inward so that it can measure outside dimensions, as the diameter of a rod.
- over-capitalise — to fix the total amount of securities of a corporation in excess of the limits set by law or by sound financial policy.