18-letter words containing u, m, a, r, t, l
- running martingale — martingale (def 2).
- rural municipality — any lightly settled area in Canada lacking a local elected government and administered directly by a provincial government.
- sault sainte marie — the rapids of the St. Marys River, between NE Michigan and Ontario, Canada.
- simple enumeration — a procedure for arriving at empirical generalizations by haphazard accumulation of positive instances.
- small claims court — a special court established to handle small claims or debts, usually without the services of lawyers.
- small-claims court — a special court established to handle small claims or debts, usually without the services of lawyers.
- stirling's formula — a relation that approximates the value of n factorial (n!), expressed as .
- structural formula — a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H–O–H.
- subatomic particle — physics:
- sugarloaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
- super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
- temporal summation — the act or process of summing.
- the full treatment — If you say that someone is given the full treatment, you mean either that they are treated extremely well or that they are treated extremely severely.
- the masurian lakes — a group of lakes in Masuria in NE Poland: scene of Russian defeats by the Germans (1914, 1915) during World War I
- the-master-builder — a play (1892) by Ibsen.
- thermonuclear bomb — hydrogen bomb.
- tristimulus values — three values that together are used to describe a colour and are the amounts of three reference colours that can be mixed to give the same visual sensation as the colour considered
- upper klamath lake — See under Klamath Lakes.
- victor emmanuel ii — 1820–78, king of Sardinia 1849–78; first king of Italy 1861–78.
- wrangell mountains — a mountain range in SE Alaska, extending into the Yukon, Canada. Highest peak: Mount Blackburn, 5037 m (16 523 ft)