18-letter words containing e, l, i, x
- self-extinguishing — to put out (a fire, light, etc.); put out the flame of (something burning or lighted): to extinguish a candle.
- sexual intercourse — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.
- sexual orientation — one's natural preference in sexual partners; predilection for homosexuality, heterosexuality, or bisexuality.
- single-lens reflex — See under reflex camera. Abbreviation: SLR.
- sixth-form college — (in England and Wales) a college offering A-level and other courses to pupils over sixteen from local schools, esp from those that do not have sixth forms
- solvent extraction — Solvent extraction is the separation of a particular substance from a mixture by dissolving that substance in a solvent that will dissolve it, but which will not dissolve any other substance in the mixture.
- telephone sex line — a telephone line operated by a phone-sex worker that offers phone sex to paying customers
- therese de lisieux — Saint (Marie Françoise Thérèse Martin"the Little Flower") 1873–97, French Carmelite nun.
- tick all the boxes — to satisfy all of the apparent requirements for success
- unix international — (body) (UI) A consortium including Sun, AT&T and others formed to promote an open environment based on Unix System V, including the Open Look windowing system.
- xenon hexafluoride — a colorless, crystalline compound, XeF 6 , that melts at 50°C to a yellow liquid, and boils at 75°C.