21-letter words containing t, h, y, o, n, e
- polygenic inheritance — the heredity of complex characters that are determined by a large number of genes, each one usually having a relatively small effect.
- potassium thiocyanate — a colorless, crystalline, hygroscopic, water-soluble solid, KSCN, used chiefly in the manufacture of chemicals, dyes, and drugs.
- rayleigh distribution — (mathematics) A curve that yields a good approximation to the actual labour curves on software projects.
- rectangular hyperbola — a hyperbola with perpendicular asymptotes
- reinforcement therapy — a behavior modification technique in which appropriate behavior is strengthened through systematic reinforcement.
- reverse polish syntax — postfix notation
- ring-around-the-rosey — a children's game in which the players sing while going around in a circle and squat when the lyrics “all fall down” are sung.
- salam-weinberg theory — the electroweak theory.
- schlieren photography — a type of photography which records schlieren
- snappy video snapshot — (hardware) (registered trademark) A frame grabber for the IBM PC designed and marketed by Play, Inc..
- sunday school teacher — someone who teaches at a Sunday school
- sympathetic vibration — a vibration induced by resonance.
- symphonie fantastique — a programmatic symphony (1830–31) in five movements by Hector Berlioz.
- 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.
- 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 student community — the body of students in further and higher education, considered as a whole
- 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 fly in the face of — If an action or belief flies in the face of accepted ideas or rules, it seems to completely oppose or contradict them.
- to fly off the handle — If you fly off the handle, you suddenly and completely lose your temper.
- 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.
- 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