15-letter words containing f, o, s
- interfoliaceous — situated between leaves, especially opposite leaves.
- irish wolfhound — one of an Irish breed of large, tall dogs having a rough, wiry coat ranging in color from white to brindle to black.
- irrespective of — regardless of sth
- island grey fox — a similar and related animal, U. littoralis, inhabiting islands off North America
- isle of sheppey — an island in SE England, off the N coast of Kent in the Thames estuary: separated from the mainland by The Swale, a narrow channel. Chief towns: Sheerness, Minster. Pop: 37 852 (2001 est). Area: 80 sq km (30 sq miles)
- isthmus of suez — a strip of land in NE Egypt, between the Mediterranean and the Red Sea: links Africa and Asia and is crossed by the Suez Canal
- ivano-frankovsk — a city in W Ukraine, S of Lvov.
- 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.
- job's comforter — a person who unwittingly or maliciously depresses or discourages someone while attempting to be consoling.
- john of austria — ("Don John") 1547?–78, Spanish naval commander and general: victor at the battle of Lepanto.
- keep to oneself — to hold or retain in one's possession; hold as one's own: If you like it, keep it. Keep the change.
- kidasa software — (company) A company which develops project management software for Microsoft Windows.
- kingdom of ends — (in Kantian ethics) a metaphorical realm to which belong those persons acting and being acted upon in accordance with moral law.
- kingsford-smith — Sir Charles (Edward). 1897–1935, Australian aviator and pioneer (with Charles Ulm) of trans-Pacific and trans-Tasman flights
- kirchhoff's law — the law that the algebraic sum of the currents flowing toward any point in an electric network is zero.
- knock spots off — to outstrip or outdo with ease
- lake miraflores — an artificial lake in Panama, in the S Canal Zone of the Panama Canal
- land of promise — Promised Land.
- latensification — (in photography) the process of intensifying a latent image by the use of chemicals, extra exposure to light, or other means
- latino-faliscan — a group of early Italic languages, including Latin and Faliscan.
- law of averages — a statistical principle formulated by Jakob Bernoulli to show a more or less predictable ratio between the number of random trials of an event and its occurrences.
- lay oneself out — to put or place in a horizontal position or position of rest; set down: to lay a book on a desk.
- leaves of grass — a book of poems (first edition, 1855; final edition, 1891–92) by Walt Whitman.
- legacy software — legacy system
- let yourself go — If you let yourself go, you relax and behave much more freely than usual.
- liaison officer — a person who liaises between groups or units
- lifestyle block — a semi-rural property comprising a house and land for small-scale farming
- line of apsides — a line joining the lower and higher apsides, forming the major axis of the orbit
- line of descent — someone's line of descent is all the people they are descended from
- linguistic form — any meaningful unit of speech, as a sentence, phrase, word, morpheme, or suffix.
- liver of sulfur — sulfurated potash.
- lofoten islands — group of Norwegian islands within the Arctic Circle, off the NW coast of Norway: c. 550 sq mi (1,424 sq km)
- loft conversion — an extra room added to a house by converting the roof space
- long-sufferance — long-suffering.
- longshore drift — beach drift.
- lopez y fuentes — Gregorio [gre-gaw-ryaw] /grɛˈgɔ ryɔ/ (Show IPA), 1895–1966, Mexican writer.
- lord of misrule — (in England) a person formerly chosen to direct the Christmas revels and sports.
- louis of nassau — 1538–74, a leader (1568–74) of the revolt of the Netherlands against Spain: died in battle
- 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
- magnesioferrite — (mineralogy) A magnesium iron oxide mineral, a member of the magnetite series of spinels, which forms black metallic octahedral crystals.
- maid of orléans — Saint ("the Maid of Orléans") 1412?–31, French national heroine and martyr who raised the siege of Orléans.
- make a hames of — to spoil through clumsiness or ineptitude
- make tracks for — to go or head towards
- man of his word — a unit of language, consisting of one or more spoken sounds or their written representation, that functions as a principal carrier of meaning. Words are composed of one or more morphemes and are either the smallest units susceptible of independent use or consist of two or three such units combined under certain linking conditions, as with the loss of primary accent that distinguishes black·bird· from black· bird·. Words are usually separated by spaces in writing, and are distinguished phonologically, as by accent, in many languages.
- man-of-war fish — a small, tropical fish, Nomeus gronovii, that lives among the tentacles of the Portuguese man-of-war.
- marfan syndrome — a hereditary disorder characterized by abnormally elongated bones, especially in the extremities, hypermotility of the joints, and circulatory and eye abnormalities.
- margaritiferous — yielding or wearing pearls
- mellifluousness — sweetly or smoothly flowing; sweet-sounding: a mellifluous voice; mellifluous tones.