20-letter words containing h, o, u, m, a
- uranium hexafluoride — a colorless, water-insoluble, crystalline, volatile solid, UF 6 , used in its gaseous state in separating uranium 235 from uranium.
- western mountain ash — a mountain ash, Sorbus sitchensis, of western North America.
- what-you-may-call-it — an object or person whose name one does not know or cannot recall.
- wilson cloud chamber — cloud chamber.
- you know what i mean — You can use expressions such as you know what I mean and if you know what I mean to suggest that the person listening to you understands what you are trying to say, and so you do not have to explain any more.
- your marching orders — If you give someone their marching orders, you tell them that you no longer want or need them, for example as your employee or as your lover.