15-letter words containing a, l, o, p
- nonspecifically — in a nonspecific way
- 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.
- nuclear-powered — powered by nuclear energy
- nullarbor plain — a treeless, semiarid area of S Australia, contiguous to the Great Australian Bight.
- oil tanker pier — An oil tanker pier is a structure over water where oil tankers can stop and load or unload.
- oil-based paint — any paint made with a drying oil or solvent such as linseed
- 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.
- old age pension — An old age pension is a regular amount of money that people receive from the government when they have retired from work.
- open-ended loan — An open-ended loan is an extension of credit where money can be borrowed when you need it, and paid back on an ongoing basis, such as a credit card.
- open-pollinated — (of a flower) pollinated without human agency.
- opening balance — the amount of money in an account at the start of an accounting period
- 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.
- ophthalmologist — a doctor of medicine specializing in ophthalmology.
- ophthalmophobia — the fear of being stared at
- ophthalmoplegia — Paralysis of the muscles within or surrounding the eye.
- ophthalmoscopes — Plural form of ophthalmoscope.
- ophthalmoscopic — Of, pertaining to or using an ophthalmoscope.
- oppositionality — Quality of being oppositional.
- 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 pumping — a method for increasing the number of atoms or molecules occupying higher energy levels by irradiating them with light of the proper frequencies to raise them to those levels.
- 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
- optical tooling — the technique of establishing precise reference lines and planes by means of telescopic sights, especially for the purpose of aligning machinery, machine-shop work, etc.
- opus anglicanum — fine embroidery, esp of church vestments, produced in England c.1200–c.1350; characterized by the rich materials used, esp silver gilt thread
- oriental carpet — Oriental rug.
- ornithodelphian — of or relating to mammals of the class Ornithodelphia
- orthopaedically — in an orthopaedic manner
- 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.
- over-compliance — the act of conforming, acquiescing, or yielding.
- over-particular — of or relating to a single or specific person, thing, group, class, occasion, etc., rather than to others or all; special rather than general: one's particular interests in books.
- over-population — to fill with an excessive number of people, straining available resources and facilities: Expanding industry has overpopulated the western suburbs.
- overapplication — excessive application
- overcapitalized — Simple past tense and past participle of overcapitalize.
- overcapitalizes — Third-person singular simple present indicative form of overcapitalize.
- overspeculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- ovoviviparously — in an ovoviviparous manner
- package holiday — a holiday arranged by a travel company in which your travel and accommodation are booked for you
- paedophile ring — a group of people who take part in illegal sexual activity involving children
- painter's colic — Pathology. lead poisoning causing intense intestinal pain.
- palaeoanthropic — relating to palaeoanthropology
- palaeogeography — the study of geographical features of the geological past
- palaeolimnology — the study of ancient lake ecologies
- palaeomagnetism — the study of the fossil magnetism in rocks, used to determine the past configurations of the continents and to investigate the past shape and magnitude of the earth's magnetic field
- palaeomagnetist — a student of or expert in palaeomagnetism
- palaeontography — the branch of palaeontology concerned with the description of fossils
- palaeopathology — the study of diseases of ancient man and fossil animals