15-letter words starting with tra
- translationally — in a manner which uses translation
- transliteration — to change (letters, words, etc.) into corresponding characters of another alphabet or language: to transliterate the Greek Χ as ch.
- transmissometer — an instrument for measuring visibility or the transmission of light in the atmosphere.
- transnationally — going beyond national boundaries or interests: a transnational economy.
- transplantation — to remove (a plant) from one place and plant it in another.
- transportedness — the quality or state of being carried away with pleasure or rapture
- transubstantial — to change from one substance into another; transmute.
- transvaal daisy — a composite plant, Gerbera jamesonii, native to southern Africa, having showy, many-rayed, variously colored flower heads.
- transverse arch — a supporting arch or rib that runs across a vault from side to side, dividing the bays.
- transverse axis — the axis of a hyperbola that passes through the two foci.
- transverse wave — a wave in which the direction of displacement is perpendicular to the direction of propagation, as a surface wave of water.
- trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
- traumatological — relating to traumatology
- travel brochure — a brochure, often from a travel agency, which advertises holidays, hotels, etc
- travel sickness — nausea caused by motion
- traveler's-tree — a bananalike tree, Ravenala madagascariensis, of Madagascar, having large leaves, the petioles of which contain a clear, watery sap.
- traveling block — (in a hoisting tackle) the block hooked to and moving with the load.
- traveller's joy — a ranunculaceous Old World climbing plant, Clematis vitalba, having white flowers and heads of feathery plumed fruits
- travelling wave — a wave carrying energy away from its source
- tray classifier — A tray classifier is a tank for leaching from a dispersed solid, in which pulp at the bottom of the tank is raked (= moved to the exit) while solvent is forced toward the bottom of the tank.