Thisnea comically incorrect spelling of Thisbe used in A Midsummer Night's Dream by Shakespeare
thisnessA unique, concrete and irreducible essence or identity of a particular thing or individual, distinguishing it from others of the same kind.
thistleAny of several perennial composite plants, especially of genera Cirsium, Carduus, Cynara, or Onopordum, having prickly leaves and showy flower heads with prickly bracts.
thixocastingA technique for producing semi-solid metal castings, using a precast billet with a non-dendritic microstructure that is normally produced by vigorously stirring the melt as the bar is being cast.
thixomoldingA technique for producing semi-solid metal castings. Room-temperature magnesium alloy chips are fed into the back end of a heated barrel through a volumetric feeder and rotated as they are forced forward into a die.
thlipsisCompression, especially constriction of vessels by an external cause.
thneedA useless product which is advertised as being needed by everybody, but which in fact no one needs.
thnetopsychismThe doctrine that when the body dies, the intangible soul and/or spirit also goes to sleep or in other words the person's consciousness ceases until the resurrection, and that the soul and/or spirit must be awoken and both are to be called back to life at the Day of Judgement. This was first recorded as taught by the Thnētopsȳchītæ, a third century sect of Christianity in Arabia, and is based on 1 Timothy 6:16, an epistolary doxology addressed to the God who alone has immortality.
tholinAny of several poorly classified heteropolymers derived from simple hydrocarbons and ammonia formed by solar irradiation in the atmospheres of icy planets and moons.
ThomasianOf or pertaining to Dylan Thomas (1914–1953), Welsh poet and writer.
ThomasinA female given name from Aramaic, a feminine form of Thomas.
ThomasinaA female given name from Aramaic, masculine equivalent Thomas.
ThomasineOf, written by, or pertaining to any of several people named Thomas, especially the philosopher Thomas Aquinas.
ThomasingThe former custom of going from house to house on St Thomas's day (December 21) to beg for small gifts.
ThomasiteAny of the group of American teachers sent to the Philippines in 1901, or arriving in the first few years on the American Colonial Period of the Philippines.
ThomaskantorA choirmaster of the Thomanerchor, a famous boys' choir founded in Leipzig in 1212.