15-letter words containing a, p, i
- isoperimetrical — having equal perimeters
- italian cypress — a tall Eurasian cypress, cupressus sempervirens, native to the eastern Mediterranean region
- italian spinone — a strongly-built gun dog with a wiry white coat and pendulous ears
- jack the ripper — an unidentified murderer who killed at least seven prostitutes in London's East End between August and November 1888
- jackass penguin — any of several boldly marked black and white penguins of the genus Spheniscus, especially S. demersus, of southern Africa, with a call resembling a donkey's bray.
- japanese quince — a flowering quince, Chaenomeles speciosa, of Japan, having scarlet flowers and pear-shaped fruit.
- jupiter's-beard — red valerian.
- jurisprudential — the science or philosophy of law.
- juxtapositional — an act or instance of placing close together or side by side, especially for comparison or contrast.
- juxtapositioned — Simple past tense and past participle of juxtaposition.
- kaleidoscopical — Alternative form of kaleidoscopic.
- kalmyk republic — a constituent republic of S Russia, on the Caspian Sea: became subject to Russia in 1646. Capital: Elista. Pop: 292 400 (2002). Area: 76 100 sq km (29 382 sq miles)
- kamikaze packet — Christmas tree packet
- keep faith with — If you keep faith with someone you have made a promise to or something you believe in, you continue to support them even when it is difficult to do so.
- kenai peninsula — peninsula in S Alas. between Cook Inlet & the main body of the Gulf of Alaska: c. 150 mi (241 km) long: site of one the world's largest ice fields
- kilovolt-ampere — an electrical unit, equal to 1000 volt-amperes. Abbreviation: kVA, kva.
- king's champion — a hereditary official at British coronations, representing the king (King's Champion) or the queen (Queen's Champion) who is being crowned, and having originally the function of challenging to mortal combat any person disputing the right of the new sovereign to rule.
- kleptoparasites — Plural form of kleptoparasite.
- kleptoparasitic — Pertaining to kleptoparasitism.
- knapping hammer — a hammer used for breaking and shaping stones
- knife-sharpener — a kitchen implement that is used to sharpen knives
- kommunizma peak — a mountain in SE Tajikistan in the Pamirs: the highest mountain in the former Soviet Union. Height: 7495 m (24 590 ft)
- lambda particle — any of a family of neutral baryons with strangeness −1 or charm +1, and isotopic spin 0. The least massive member of the lambda family was the first strange particle to be discovered. Symbol: Λ.
- land of promise — Promised Land.
- lapland bunting — a passerine bird: Calcarius lapponicus
- lead-pipe cinch — an absolute certainty: It's a lead-pipe cinch they'll be there.
- leaf primordium — a group of cells that will develop into a leaf, seen as small bulges just below the shoot apex.
- lean production — Lean production is the same as lean manufacturing.
- least sandpiper — a small, American sandpiper, Calidris minutilla, related to the stints of Europe.
- leaving present — a present given to a person when they leave a job, place etc
- leptosporangium — (botany) A sporangium formed from a single epidermal cell.
- lex non scripta — unwritten law; common law.
- lexical scoping — lexical scope
- lexicographical — the writing, editing, or compiling of dictionaries.
- lick into shape — to pass the tongue over the surface of, as to moisten, taste, or eat (often followed by up, off, from, etc.): to lick a postage stamp; to lick an ice-cream cone.
- life expectancy — the probable number of years remaining in the life of an individual or class of persons determined statistically, affected by such factors as heredity, physical condition, nutrition, and occupation.
- limited company — a company in which the shareholders cannot be assessed for debts of the company beyond the sum they still have invested in the company.
- limited partner — special partner.
- line of apsides — a line joining the lower and higher apsides, forming the major axis of the orbit
- linear operator — a mathematical operator with the property that applying it to a linear combination of two objects yields the same linear combination as the result of applying it to the objects separately.
- linear topology — (theory) A linear topology on a left A-module M is a topology on M that is invariant under translations and admits a fundamental system of neighborhood of 0 that consists of submodules of M. If there is such a topology, M is said to be linearly topologized. If A is given a discrete topology, then M becomes a topological A-module with respect to a linear topology.
- liquid paraffin — a colourless almost tasteless oily liquid obtained by petroleum distillation and used as a laxative
- lissencephalous — having the cephalic disorder of a lack of developed brain folds
- little corporal — (Napoleon Bonaparte"the Little Corporal") 1769–1821, French general born in Corsica: emperor of France 1804–15.
- liver complaint — an unspecified health problem concerning the liver
- livery cupboard — a cupboard with pierced doors, formerly used as a storage place for food.
- lleyn peninsula — a peninsula in NW Wales between Cardigan Bay and Caernarfon Bay
- loading program — a series of instructions entered automatically in a program that starts the processing.
- lobar pneumonia — pneumonia (def 2).
- logging company — a company that fells trees and sells timber