15-letter words containing p, a, e, d, o
- absorption edge — a discontinuity in the graph of the absorption coefficient of a substance plotted against the wavelength of x-rays being absorbed, representing the minimum energy necessary to free electrons from particular shells of the atoms of the substance.
- accepted masons — a member of a widely distributed secret order (Free and Accepted Masons) having for its object mutual assistance and the promotion of brotherly love among its members.
- accordion pleat — one of a series of narrow, evenly spaced parallel pleats with alternating raised and recessed folds set into cloth or other material, usually by a commercial pleating machine.
- acetophenetidin — phenacetin
- adaptive optics — a technique used to increase the resolution of a ground-based astronomical telescope by counteracting the effects of the atmosphere on the image. A deforming mirror in the light path of the telescope maintains a pointlike image of the celestial body using either a real star or a laser beam as a reference
- adenohypophysis — the anterior lobe of the pituitary gland
- adjective group — An adjective group or adjectival group is a group of words based on an adjective, such as 'very nice' or 'interested in football'. An adjective group can also consist simply of an adjective.
- adoption agency — an agency that matches children needing adoption with people willing to adopt
- adoption papers — documentation relating to the adoption of a particular child
- adrenoreceptors — Plural form of adrenoreceptor.
- advocate depute — a Scottish law officer with the functions of public prosecutor
- alexandroupolis — a port in NE Greece, in W Thrace. Pop: 52 720 (2001 est)
- algaroth powder — antimony oxychloride.
- all mockered up — dressed up
- allotetraploidy — the condition of being an allotetraploid
- alpha and omega — the first and last, a phrase used in Revelation 1:8 to signify God's eternity
- alpine combined — a competition for Alpine skiers in a combination of downhill and slalom races, the winner having the highest total score.
- andrographolide — (organic compound) A bitter labdane diterpenoid that is the main bioactive component of the medicinal plant Andrographis paniculata, effective against certain cancers.
- aneroid capsule — a box or chamber of thin metal, partially exhausted of air, used in the aneroid barometer and pressure altimeter.
- anti-productive — having the power of producing; generative; creative: a productive effort.
- antidevelopment — (of a group) opposed to development
- aphrodite terra — a large plateau region that stretches approximately halfway around the middle latitude of Venus.
- apollo asteroid — one of a number of asteroids whose orbits cross that of the earth.
- apostles' creed — a concise statement of Christian beliefs dating from about 500 ad, traditionally ascribed to the Apostles
- apple-pie order — perfect order or condition
- approved school — In Britain in the past, an approved school was a boarding school where young people could be sent to stay if they had been found guilty of a crime.
- arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
- armaments depot — a store for armaments
- asclepiadaceous — of, relating to, or belonging to the Asclepiadaceae, a family of mostly tropical and subtropical flowering plants, including the milkweed and swallowwort, having pollen in the form of a waxy mass (pollinium): now usually regarded as a subfamily of the Apocynaceae
- audio equipment — electrical devices used to play or record sound
- autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
- bad housekeeper — a person who is not an efficient and thrifty domestic manager
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- barium peroxide — a gray-white powder, BaO2, used as a bleach and in making hydrogen peroxide
- ben day process — a method of adding texture, shading, or detail to line drawings by overlaying a transparent sheet of dots or any other pattern during platemaking
- beyond the pale — If you think that someone's actions or behaviour are not acceptable, you can say that they are beyond the pale.
- bird of passage — If you refer to someone as a bird of passage, you mean that they are staying in a place for a short time before going to another place.
- bit-mapped font — a computer font whose characters are held in memory as series of dots.
- bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
- board of parole — an agency that determines which prisoners are to be released on parole
- boiled potatoes — potatoes, usually peeled, cooked in boiling water
- break-in period — a period during which certain restrictions or moderation in operating should be followed, as the avoidance of high speed, rapid acceleration, or severe braking for a new automobile.
- cache la poudre — a river in N Colorado, flowing N and E to the South Platte River. 126 miles (203 km) long.
- camphorated oil — a liniment consisting of camphor and peanut oil, used as a counterirritant
- casters-up mode — [IBM, probably from slang belly up] Yet another synonym for "broken" or "down". Usually connotes a major failure. A system (hardware or software) which is "down" may be already being restarted before the failure is noticed, whereas one which is "casters up" is usually a good excuse to take the rest of the day off (as long as you're not responsible for fixing it).
- celandine poppy — a poppy, Stylophorum diphyllum, of the east-central U.S., having one pair of deeply lobed leaves and yellow flowers.
- cephalochordate — any chordate animal of the subphylum Cephalochordata, having a fishlike body and no vertebral column; lancelet
- chandler period — the period of the oscillation (Chandler wobble) of the earth's axis, varying between 416 and 433 days.
- chenopodiaceous — belonging to the Chenopodiaceae, formerly the goosefoot family, now considered part of the amaranth family of plants.
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