21-letter words containing l, y, o, p, h
- theoretical physicist — a scientist who studies theoretical physics
- threshold wage policy — a policy whereby wages are increased in accordance with inflation
- to play the race card — if someone plays the race card they bring up the issue of race in a discussion, perhaps for sympathy or to seek popularity by appealing to racist sentiment
- x-ray crystallography — the determination of the structure of a crystal by the use of x-ray diffraction.