21-letter words containing n, o, r, t, h, y
- saint anthony's cross — tau cross.
- salam-weinberg theory — the electroweak theory.
- schlieren photography — a type of photography which records schlieren
- sunday school teacher — someone who teaches at a Sunday school
- sympathetic vibration — a vibration induced by resonance.
- synchronized shifting — gear shifting in which the gears to be meshed are made to rotate at the same speed.
- synchronous converter — a synchronous machine for converting alternating current to direct current, or vice versa, in which the armature winding is connected to collector rings and to a commutator.
- synchrotron radiation — electromagnetic radiation emitted by charged particles as they pass through magnetic fields.
- tartarian honeysuckle — an Asian honeysuckle, Lonicera tatarica, having fragrant, white to pink flowers.
- the break of day/dawn — The break of day or the break of dawn is the time when it begins to grow light after the night.
- the stationery office — (in the UK) the company that supplies the civil service with all its office supplies, machinery, printing and binding, etc
- the women's land army — a unit of women recruited to do agricultural work in the United Kingdom during World War I and World War II
- therapeutic community — a group-based form of therapy for mental disorders, sometimes residential
- to have money to burn — If you say that someone has money to burn, you mean that they have more money than they need or that they spend their money on things that you think are unnecessary.
- to lay something bare — If you lay something bare, you uncover it completely so that it can then be seen.
- to let your hair down — If you let your hair down, you relax completely and enjoy yourself.
- washington's birthday — February 22, formerly observed as a legal holiday in most states of the U.S. in honor of the birth of George Washington.
- weinberg-salam theory — electroweak theory.
- youth training scheme — (formerly, in Britain) a scheme, run by the Training Agency, to provide vocational training for unemployed 16–17-year-olds