21-letter words containing l, e, u, r

league of arab states — Arab League.
learning difficulties — difficulty experienced in reaching the average standard of people of the same age group as regards intellectual and cognitive skills and performance
leave sb in the lurch — If someone leaves you in the lurch, they go away or stop helping you at a very difficult time.
like a blue-arsed fly — in a state of frenzied activity
liquefied natural gas — a mixture of various gases, esp methane, liquefied under pressure for transportation and used as an engine fuel
loch ness monster bug — (humour) (Or "Bugfoot") A bug which cannot be reproduced or has only been sighted by one person. Named after the mythical creature claimed to inhabit Loch Ness in Scotland.
look to one's laurels — any tree of the genus Laurus.
lost in the underflow — (jargon) Too small to be worth considering; more specifically, small beyond the limits of accuracy or measurement. This is a reference to "floating point underflow". The Hacker's Jargon File claimed that it is also a pun on "undertow" (a kind of fast, cold current that sometimes runs just offshore and can be dangerous to swimmers). "Well, sure, photon pressure from the stadium lights alters the path of a thrown baseball, but that effect gets lost in the underflow". Compare epsilon, epsilon squared; see also overflow bit.
lotus-of-the-true-law — a Mahayana sutra, forming with its references to Amida and the Bodhisattvas the basis for the doctrine that there is something of Buddha in everyone, so that salvation is universally available: a central text of Mahayana Buddhism.
lull before the storm — If you describe a situation as the lull before the storm, you mean that although it is calm now, there is going to be trouble in the future.
macgillicuddy's reeks — a mountain range in County Kerry, SW Ireland. Highest peak (also highest in Ireland), Carrantuohill, 3414 feet (1041 meters).
magnesium trisilicate — a white, fine, odorless and tasteless powder, Mg 2 O 8 Si 3 ⋅nH 2 O, used industrially to absorb odors and decolorize and pharmaceutically as an antacid.
maître d'hôtel butter — melted butter mixed with parsley and lemon juice
make up for lost time — compensate for past inaction
make yourself at home — settle in
maple-leaved viburnum — dockmackie.
marketable securities — Marketable securities are securities that can easily be sold quickly on the open market.
maximum value theorem — the theorem that for a real-valued function f whose domain is a compact set, there is at least one element x in the domain of f for which f (x) achieves its largest value.
mechanical instrument — a musical instrument, such as a barrel organ or music box, that plays a preselected piece of music by mechanical means
mechanical metallurgy — the branch of metallurgy dealing with the response of metals to applied forces.
medical jurisprudence — forensic medicine.
medium access control — Media Access Control
mengistu haile mariam — born 1937, Ethiopian political leader: head of state 1977–87; president 1987–91.
mother-of-pearl cloud — nacreous cloud.
mucopolysaccharidoses — Plural form of mucopolysaccharidosis.
multi-level marketing — Multi-level marketing is a marketing technique which involves people buying a product, then earning a commission by selling it to their friends. The abbreviation MLM is also used.
multi-ringed compound — A multi-ringed compound is a compound which has 70 or more carbon atoms, often a residual compound.
multichannel analyser — an electronic instrument, such as a pulse height analyser, that splits an input waveform into a large number of channels in accordance with a particular parameter of the input
multilayer perceptron — A network composed of more than one layer of neurons, with some or all of the outputs of each layer connected to one or more of the inputs of another layer. The first layer is called the input layer, the last one is the output layer, and in between there may be one or more hidden layers.
multiplex transmitter — a transmitter that sends signals by multiplex
narrow-angle glaucoma — Ophthalmology. angle-closure glaucoma. See under glaucoma.
naturalization papers — documents confirming that someone has been awarded citizenship of a country he or she was not born in
negotiable instrument — order or promise to pay money
negotiable securities — securities that are legally transferable in title from one party to another
new general catalogue — NGC.
new year's resolution — If you make a New Year's resolution, you make a decision at the beginning of a year to start doing something or to stop doing something.
night-blooming cereus — any of various cacti of the genera Hylocereus, Peniocereus, Nyctocereus, or Selenicereus, having large, usually white flowers that open at night.
non-maintainer upload — (operating system) (NMU) A release of a Debian package by someone other than its usual maintainer. E.g. "The bug was fixed in a recent NMU."
nonrestrictive clause — a relative clause that describes or supplements but is not essential in establishing the identity of the antecedent and is usually set off by commas in English. In This year, which has been dry, is bad for crops the clause which has been dry is a nonrestrictive clause.
northumberland strait — the part of the Gulf of St. Lawrence that separates Prince Edward Island from New Brunswick and Nova Scotia, in SE Canada. About 200 miles (320 km) long; 9–30 miles (15–48 km) wide.
nuclear cross section — cross section (def 7).
nuclear power station — a station or plant where nuclear energy is converted into heat, electricity, etc
oblique circular cone — a cone whose surface is generated by lines joining a fixed point to the points of a circle, the fixed point lying on a line that is not perpendicular to the circle at its center.
of your own free will — out of choice
oil-in-water emulsion — An oil-in-water emulsion is a mixture in which an oily medicine is dispersed in water or other liquid.
ophthalmia neonatorum — inflammation of the eyes of a newborn child due to an infectious disease, as gonorrhea, contracted during birth from the infected mother.
optical double (star) — double star (sense 2)
packed encoding rules — (protocol, standard) (PER) ASN.1 encoding rules for producing a compact transfer syntax for data structures described in ASN.1, defined in 1994. PER provides a much more compact encoding then BER. It tries to represents the data units using the minimum number of bits. The compactness requires that the decoder knows the complete abstract syntax of the data structure to be decoded, however. Documents: ITU-T X.691, ISO 8825-2.
parliamentary inquiry — a question asked of the presiding officer of a parliament in relation to parliamentary law
peroxydisulfuric acid — persulfuric acid (def 2).

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