15-letter words containing a, e, r, o, s, i
- interscholastic — between schools, or representative of different schools, especially secondary schools: interscholastic athletics.
- intervalometers — Plural form of intervalometer.
- intervisitation — the act of visiting.
- intolerableness — The state of being intolerable or insufferable.
- introspectional — Of or relating to introspection.
- inversion layer — a layer of the atmosphere in which there is a temperature inversion, with the layer tending to prevent the air below it from rising, thus trapping any pollutants that are present.
- inverted commas — Inverted commas are punctuation marks that are used in writing to show where speech or a quotation begins and ends. They are usually written or printed as ' ' or " ". Inverted commas are also sometimes used around the titles of books, plays, or songs, or around a word or phrase that is being discussed.
- involuntariness — The state of being involuntary; unwillingness; automatism.
- ionospherically — by the ionosphere
- ironstone china — a tough durable earthenware
- irrationalities — Plural form of irrationality.
- irresolvability — The quality of being irresolvable.
- irrevocableness — Quality of being irrevocable.
- island grey fox — a similar and related animal, U. littoralis, inhabiting islands off North America
- isolated camera — a television camera used to isolate a subject, part of a sports play, etc., for instant replay.
- isoperimetrical — having equal perimeters
- isothermal-line — Meteorology. a line on a weather map or chart connecting points having equal temperature.
- jefferson davis — Alexander Jackson, 1803–92, U.S. architect.
- jeffersonianism — pertaining to or advocating the political principles and doctrines of Thomas Jefferson, especially those stressing minimum control by the central government, the inalienable rights of the individual, and the superiority of an agrarian economy and rural society.
- judeo-christian — of or relating to the religious writings, beliefs, values, or traditions held in common by Judaism and Christianity.
- keyboard skills — ability to input information using a keyboard
- kidasa software — (company) A company which develops project management software for Microsoft Windows.
- kleptoparasites — Plural form of kleptoparasite.
- kleptoparasitic — Pertaining to kleptoparasitism.
- labor relations — worker-employer relationship
- labor-intensive — requiring or using a large supply of labor, relative to capital.
- ladrone islands — a group of 15 small islands in the Pacific, E of the Philippines: divided into Guam, a possession of the U.S., and the North Marianas, formally under U.S. trusteeship. 453 sq. mi. (1127 sq. km).
- lake miraflores — an artificial lake in Panama, in the S Canal Zone of the Panama Canal
- land of promise — Promised Land.
- laser ring gyro — a system of aerial navigation in which rotation is sensed by the measuring of the frequency shift of laser light in a closed circuit in a horizontal plane
- learned society — an organization devoted to the scholarly study of a particular field or discipline, as modern languages, psychology, or history.
- lemon-grass oil — a yellowish to brownish oil distilled from the leaves of certain lemon grasses, especially Cymbopogon citratus, used chiefly in perfumery.
- leptosporangium — (botany) A sporangium formed from a single epidermal cell.
- lesser dionysia — (in ancient Attica) the wine feasts, processions, and dramatic performances composing one of the festivals honoring Dionysus, held in the middle of December.
- lex non scripta — unwritten law; common law.
- liaison officer — a person who liaises between groups or units
- liberalizations — Plural form of liberalization.
- local is lekker — popular slogan promoting South African culture, produce, etc
- logical address — virtual address
- lons-le-saunier — a department in E France. 1952 sq. mi. (5055 sq. km). Capital: Lons-le-Saunier.
- lord privy seal — a cabinet minister without portfolio.
- lost generation — the generation of men and women who came of age during or immediately following World War I: viewed, as a result of their war experiences and the social upheaval of the time, as cynical, disillusioned, and without cultural or emotional stability.
- louis d'orleans — Louis Philippe Joseph [lwee fee-leep zhaw-zef] /lwi fiˈlip ʒɔˈzɛf/ (Show IPA), Duc (Philippe Égalité) 1747–93, French political leader.
- louisiana heron — tricolored heron.
- low pass filter — (electronics, graphics) A filter that attenuates high frequency components of a signal. In image processing, a low pass filter might be used to remove noise from an image.
- low-pass filter — a filter that transmits all frequencies below a specified value, substantially attenuating frequencies above this value
- lower east side — a section in the borough of Manhattan, New York: noted for its immigrant culture.
- lower slobbovia — any place considered to be remote, poor, or unenlightened.
- macaroni cheese — Macaroni cheese is a dish made from macaroni and cheese sauce.
- magnesioferrite — (mineralogy) A magnesium iron oxide mineral, a member of the magnetite series of spinels, which forms black metallic octahedral crystals.