11-letter words containing e, p, s, o
- iron sponge — sponge iron.
- isocephalic — (of a composition) having the heads of all figures on approximately the same level.
- isodiaphere — one of two or more nuclides in which the difference between the number of neutrons and the number of protons is the same
- isometropia — equality of refraction in the two eyes of an individual.
- isospectral — (mathematics) Having the same spectrum.
- isoxsuprine — a sympathomimetic vasodilator, C 18 H 23 NO 3 , used in certain types of peripheral vascular disease.
- iteroparous — (of a plant) producing flowers and fruit more than once (usually many times) before dying
- jehoshaphat — a king of Judah, son of Asa, who reigned in the 9th century b.c. I Kings 22:41–50.
- jeopardised — Simple past tense and past participle of jeopardise.
- jeopardizes — Third-person singular simple present indicative form of jeopardize.
- joao pessoa — a state in E Brazil. 21,760 sq. mi. (56,360 sq. km). Capital: João Pessoa.
- joe sixpack — Slang. the average or typical blue-collar man.
- joggle post — a wooden king post having notches or raised areas for receiving and supporting the feet of struts.
- john scopes — John Thomas, 1901–70, U.S. high-school teacher whose teaching of the Darwinian theory of evolution became a cause célèbre (Scopes Trial or Monkey Trial) in 1925.
- joseph raff — Joseph Joachim, 1822–82, Swiss composer.
- josephinite — a mineral alloy of nickel and iron
- keep kosher — to observe the Jewish dietary laws
- keep stroke — to make strokes in rhythm
- keogh plans — a pension plan for an unincorporated business entity or self-employed person.
- keratoscope — an instrument, as Placido's disk, for determining the symmetry of the curvature of the cornea.
- keratoscopy — an instrument, as Placido's disk, for determining the symmetry of the curvature of the cornea.
- ketopentose — (carbohydrate) A pentose that is also a ketose.
- kiloparsecs — Plural form of kiloparsec.
- kinetoplast — A mass of mitochondrial DNA lying close to the nucleus in some flagellate protozoa.
- kinetoscope — an early motion-picture device, invented by Edison, in which the film passed behind a peephole for viewing by a single viewer.
- kleptocrats — Plural form of kleptocrat.
- knifepoints — Plural form of knifepoint.
- knoop scale — a scale of hardness based on the indentation made in the material to be tested by a diamond point.
- krugersdorp — a city in S Transvaal, in the NE Republic of South Africa, NW of Johannesburg.
- laparoscope — a flexible fiberoptic instrument, passed through a small incision in the abdominal wall and equipped with biopsy forceps, an obturator, scissors or the like, with which to examine the abdominal cavity or perform minor surgery.
- laser proof — a print proof of an element of a page printed out on a laser printer, so as to give an almost accurate preview of the final printout
- last gospel — in the order of service for the Mass, the final reading of a Gospel lesson.
- leafhoppers — Plural form of leafhopper.
- leap second — Coordinated Universal Time
- leopardskin — the skin of a leopard
- leper house — a hospital for lepers; leprosarium.
- lepidosiren — a lungfish, Lepidosiren paradoxa, of the Amazon, having an eel-shaped body.
- lepromatous — the swollen lesion of leprosy.
- leprosarium — a hospital for the treatment of lepers.
- leptospiral — relating to, caused by, or characteristic of leptospires
- lesson plan — outline of teaching session
- leucoplasia — a disorder of a mucous membrane characterized by one or more white patches, occurring most commonly on the cheek, tongue, vulva, or penis: often medically insignificant but sometimes becoming malignant.
- leucoplasts — Plural form of leucoplast.
- leukoplasia — a disorder of a mucous membrane characterized by one or more white patches, occurring most commonly on the cheek, tongue, vulva, or penis: often medically insignificant but sometimes becoming malignant.
- linesperson — (sports) A linesman or lineswoman.
- lipogenesis — (biochemistry) The biochemical production of fat, especially the conversion of carbohydrate into fat so that it may be stored as a long-term source of energy when food is scarce.
- lippes loop — a polyethylene intrauterine contraceptive device, shaped like a double S
- lister-plow — Also called lister plow, middlebreaker, middlebuster. a plow with a double moldboard, used to prepare the ground for planting by producing furrows and ridges.
- lithophytes — Plural form of lithophyte.
- lithosphere — the solid portion of the earth (distinguished from atmosphere, hydrosphere).