Inside the Universes

'US'

[united_states.n.01] as in: North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776

'US'

[uracil.n.01] as in: a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine

'US'

[uranium.n.01] as in: a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

'US'

[u.n.03] as in: the 21st letter of the Roman alphabet