21-letter words containing c, o, l, r, g, a
- the rock of gibraltar — a limestone promontory at the tip of S Spain
- the royal scots greys — (formerly) a British cavalry regiment, the Second Dragoons
- threshold wage policy — a policy whereby wages are increased in accordance with inflation
- to kill a mockingbird — a novel (1960) by Harper Lee.
- topgallant forecastle — a partial weather deck on top of a forecastle superstructure; forecastle deck.
- topological invariant — a property of a topological space that is a property of every space related to the given space by a homeomorphism.
- total recoverable gas — Total recoverable gas is the amount of gas which is still left in the ground in gas fields that have already been worked.
- x-ray crystallography — the determination of the structure of a crystal by the use of x-ray diffraction.