18-letter words containing e, m, u, l, s, i
- spectrofluorimeter — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
- subatomic particle — physics:
- subliminal message — a message passed to the human mind without the mind being consciously aware of it, as, for example, in advertising
- super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
- super middleweight — a boxer weighing up to 168 pounds (75.6 kg), between middleweight and light heavyweight.
- survival mechanism — something you or your body does automatically, in order to survive in a dangerous or unpleasant situation
- telecommunications — Sometimes, telecommunication. (used with a singular verb) the transmission of information, as words, sounds, or images, usually over great distances, in the form of electromagnetic signals, as by telegraph, telephone, radio, or television.
- temporal summation — the act or process of summing.
- 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.
- thermoluminescence — phosphorescence produced by the heating of a substance.
- to close your mind — If you close your mind to something, you deliberately do not think about it or pay attention to it.
- 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 middle class — wealthy, highly-educated people
- working men's club — A working men's club is a place where working people, especially men, can go to relax, drink alcoholic drinks, and sometimes watch live entertainment.
- wrangell mountains — a mountain range in SE Alaska, extending into the Yukon, Canada. Highest peak: Mount Blackburn, 5037 m (16 523 ft)