13-letter words containing a, u, s, o
- isoamyl group — the univalent group C 5 H 11 .
- isostructural — (of two substances) having the same crystal structure but not necessarily a similar chemical composition.
- james douglas — Sir James ("the Black Douglas") 1286–1330, Scottish military leader.
- jerusalem oak — feather geranium.
- juan carlos i — King (Juan Carlos Alfonso Victor María de Borbón y Borbón) born 1938, Spanish monarch, born in Italy: king since 1975.
- judeo-spanish — Ladino (def 1).
- juglandaceous — belonging to the plant family Juglandaceae.
- jus canonicum — canon law.
- just a moment — an expression requesting the hearer to wait or pause for a brief period of time
- justification — a reason, fact, circumstance, or explanation that justifies or defends: His insulting you was ample justification for you to leave the party.
- justificatory — serving to justify; providing justification.
- juxtaposition — an act or instance of placing close together or side by side, especially for comparison or contrast.
- kim young sam — born 1927, president of South Korea 1993–98.
- kuskokwim bay — an inlet of the Bering Sea in Alaska. Length: about 160 km (100 miles)
- laboriousness — requiring much work, exertion, or perseverance: a laborious undertaking.
- labour supply — the total number of hours that workers are willing and able to be paid wages to work for
- labour unrest — unrest or dissatisfaction displayed by workers, often in the form of strikes, and sometimes violent disputes, etc, which disrupts normal business
- labour-saving — A labour-saving device or idea makes it possible for you to do something with less effort than usual.
- lace-up shoes — shoes which are fastened with laces
- lactobacillus — any long, slender, rod-shaped, anaerobic bacterium of the genus Lactobacillus, that produces large amounts of lactic acid in the fermentation of carbohydrates, especially in milk.
- lake sturgeon — a sturgeon, Acipenser fulvescens, of the Great Lakes and Mississippi and St. Lawrence rivers.
- lake superior — Lake, a lake in the N central United States and S Canada: the northernmost of the Great Lakes; the largest body of fresh water in the world. 350 miles (564 km) long; 31,820 sq. mi. (82,415 sq. km); greatest depth, 1290 feet (393 meters); 602 feet (183 meters) above sea level.
- lake-superior — Lake, a lake in the N central United States and S Canada: the northernmost of the Great Lakes; the largest body of fresh water in the world. 350 miles (564 km) long; 31,820 sq. mi. (82,415 sq. km); greatest depth, 1290 feet (393 meters); 602 feet (183 meters) above sea level.
- lamb's tongue — a molding having a deep, symmetrical profile ending in a narrow edge, as in a sash bar.
- lambeosaurine — Any crested hadrosaurid dinosaur of the subfamily Lambeosaurinae.
- laughingstock — an object of ridicule; the butt of a joke or the like: His ineptness as a public official made him the laughingstock of the whole town.
- leiomyomatous — a benign tumor composed of nonstriated muscular tissue.
- leptocephalus — a colorless, transparent, flattened larva, especially of certain eels and ocean fishes.
- lighthouseman — a lighthouse keeper
- liquefactions — Plural form of liquefaction.
- liquid storax — a solid resin with a vanillalike odor, obtained from a small tree, Styrax officinalis: formerly used in medicine and perfumery.
- loss adjuster — A loss adjuster is someone who is employed by an insurance company to decide how much money should be paid to a person making a claim.
- louis pasteur — Louis [loo-ee;; French lwee] /ˈlu i;; French lwi/ (Show IPA), 1822–95, French chemist and bacteriologist.
- lower austria — a province in NE Austria. 7092 sq. mi. (18,370 sq. km).
- lump of sugar — lump1 (def 4).
- lycanthropous — Lycanthropic.
- macrocephalus — Alternative spelling of macrocephalous.
- macrovascular — Of or pertaining to the larger blood vessels.
- magnanimously — In a magnanimous manner; with greatness of mind.
- magnesiferous — (geology) Containing magnesium.
- magnetiferous — (dated) Producing or conducting magnetism.
- magnitudinous — size; extent; dimensions: to determine the magnitude of an angle.
- magnoliaceous — belonging to the plant family Magnoliaceae.
- maliciousness — full of, characterized by, or showing malice; intentionally harmful; spiteful: malicious gossip.
- mammaliferous — containing the remains of mammals
- manganiferous — containing manganese.
- manipulations — Plural form of manipulation.
- manon lescaut — a novel (1731) by Antoine François Prévost.
- mansion house — the residence of the Lord Mayor of London
- manufactories — Plural form of manufactory.