19-letter words containing o, a, r, f, i, s
- the roaring forties — the areas of ocean between 40° and 50° latitude in the S Hemisphere, noted for gale-force winds
- theory of equations — the branch of mathematics dealing with methods of finding the solutions to algebraic equations.
- to tear a strip off — If you tear a strip off someone or if you tear them off a strip, you speak to them angrily and criticize them severely.
- traffic regulations — rules designed to expedite the flow of traffic and prevent collisions
- transesterification — a reaction between an ester of one alcohol and a second alcohol to form an ester of the second alcohol and an alcohol from the original ester, as that of methyl acetate and ethyl alcohol to form ethyl acetate and methyl alcohol; interesterification.
- transformationalism — a person who follows or promotes the theories of transformational grammar.
- transformationalist — a person who follows or promotes the theories of transformational grammar.
- transformer station — a station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers
- transitional relief — a form of tax relief, designed to smooth large changes in liability, which operates by restricting the proportion by which liability may change per year, both upwards and downwards
- translation of axes — the process of replacing the axes in a Cartesian coordinate system with a new set of axes, parallel to the first, used to write equations of curves not centered about the origin.
- tricks of the trade — expert techniques
- unit of measurement — physical quantity
- upper carboniferous — Pennsylvanian (defs 2, 4).
- whorfian hypothesis — Sapir-Whorf hypothesis.