15-letter words containing o, p, e, n, a, i
- armour-piercing — capable of penetrating armour plate
- arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
- at the point of — very close to; on the verge of
- audio equipment — electrical devices used to play or record sound
- back projection — a method of projecting pictures onto a translucent screen so that they are viewed from the opposite side, used esp in films to create the illusion that the actors in the foreground are moving
- ballpoint (pen) — a pen having, instead of a point, a small ball bearing that picks up its ink by rolling against an interior ink reservoir
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- bear comparison — to be sufficiently similar in class or range to be compared with (something else), esp favourably
- bit-mapped font — a computer font whose characters are held in memory as series of dots.
- black operation — a covert and undocumented military operation
- 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.
- bowel complaint — bowel disease or condition
- 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.
- breakeven point — a point at which the total revenue and total cost are equal
- breaking plough — a plough with a long shallow mouldboard for turning virgin land or sod land
- brompheniramine — a substance, C 16 H 19 BrN 2 , used as an antihistamine in the management of various allergies, as hay fever.
- campaign worker — a person who carries out duties for a political candidate or party, esp before an election
- cancel a policy — If you cancel a policy, you terminate a contract of insurance.
- capital offence — a crime for which the death penalty is used
- cast aspersions — If you cast aspersions on someone or something, you suggest that they are not very good in some way.
- castanospermine — a substance obtained from the Australian chestnut or black bean tree
- celandine poppy — a poppy, Stylophorum diphyllum, of the east-central U.S., having one pair of deeply lobed leaves and yellow flowers.
- chairpersonship — a person who presides over a meeting, committee, board, etc.
- chandler period — the period of the oscillation (Chandler wobble) of the earth's axis, varying between 416 and 433 days.
- channel hopping — (chat) To rapidly switch channels on IRC, or a GEnie chat board. This term may derive from the TV idiom, "channel surfing".
- channel-hopping — Channel-hopping means switching quickly between different television channels because you are looking for something interesting to watch.
- chenopodiaceous — belonging to the Chenopodiaceae, formerly the goosefoot family, now considered part of the amaranth family of plants.
- chimney-pot hat — a high silk hat; top hat.
- chloramphenicol — a broad-spectrum antibiotic used esp in treating typhoid fever and rickettsial infections: obtained from the bacterium Streptomyces venezuelae or synthesized. Formula: C11H12N2O5Cl2
- choral speaking — recitation of poetry, dramatic pieces, etc. by a chorus of speakers
- cineangiography — the use of motion-picture recording to trace the passage of dye through blood vessels, for the diagnosis of heart and blood vessel disease
- cinematographed — a motion-picture projector.
- cinematographer — A cinematographer is a person who decides what filming techniques should be used during the shooting of a film.
- cinematographic — a motion-picture projector.
- cinemicrography — the making of a film through the lens of a microscope
- cineradiography — the filming of motion pictures through a fluoroscope or x-ray machine.
- coachwhip snake — a slender nonvenomous snake, Masticophis flagellum, of the US
- come up against — If you come up against a problem or difficulty, you are faced with it and have to deal with it.
- communion plate — a flat plate held under the chin of a communicant in order to catch any fragments of the consecrated Host
- companion piece — a subsidiary object, esp a work of art or piece of writing, that accompanies another
- company officer — a captain or lieutenant serving in a company.
- company pension — a pension scheme run by a company for its employees
- comparativeness — of or relating to comparison.
- comparison test — a comparison of particular qualities or traits in two or more things in order to get a measurable assessment
- compassionately — having or showing compassion: a compassionate person; a compassionate letter.
- competition car — a car that has been modified to compete in racing
- complementaries — forming a complement; completing.
- complementarily — In a complementary manner.
- complementarity — a state or system that involves complementary components