(humorous, nonstandard) The United Kingdom, when ruled by a queen rather than a king.

(mathematics) a completely multiplicative function on the positive integers that is defined as equal to one for a special value and zero otherwise:

plural of unit function

plural of derived unit

plural of urotoxic unit

The amount of urotoxin necessary to kill an animal weighing one kilogram.

plural of effects unit

plural of motor unit

(slang) A stupid person; an idiot / The average distance between the centres of the Earth and the Moon; lunar distance

plural of moon unit