19-letter words containing n, i, h, l, s, m
- pinwheel escapement — a clock escapement in which two pallets, usually of unequal length, alternately engage and release pins set on the escape wheel perpendicular to its plane of rotation.
- releasing mechanism — a hypothetical control complex in the central nervous system of animals that triggers the appropriate behavioral response to a releaser.
- samuel de champlain — Samuel de [sam-yoo-uh l duh;; French sa-my-el duh] /ˈsæm yu əl də;; French sa müˈɛl də/ (Show IPA), 1567–1635, French explorer in the Americas: founder of Quebec; first colonial governor 1633–35.
- seven hills of rome — the hills on which the ancient city of Rome was built: the Palatine, Capitoline, Quirinal, Caelian, Aventine, Esquiline, and Viminal
- spherical astronomy — the branch of astronomy dealing with the determination of the positions of celestial bodies on the celestial sphere.
- stanislavski method — method (def 5).
- sulphonium compound — any one of a class of salts derived by the addition of a proton to the sulphur atom of a thiol or thio-ether thus producing a positive ion (sulphonium ion)
- tetramethyldiarsine — an oily slightly water-soluble poisonous liquid with garlic-like odour. Its derivatives are used as accelerators for rubber
- the compassion club — (in Canada) a nonprofit organization that provides uncontaminated cannabis for medical purposes and natural therapies in a safe environment
- the middle distance — an unspecified point in the distance
- vesicular exanthema — an infectious viral disease of swine, characterized by blisters on the snout, mucous membranes, and feet.
- welsh mountain pony — a small sturdy but graceful breed of pony used mostly for riding, originally from Wales
- wesleyan methodists — a branch of the Methodist Church in its original form
- withdrawal syndrome — a spectrum of physical and behavioral symptoms following cessation from the continuous use of an addictive drug, the character and severity of the symptoms depending upon the particular drug and the daily dose.