u (EN)letter, symbol
This word can also be a form of:
U (letter, noun, preposition, symbol)
letter “u”
u
- the lowercase form of the letter "U" Sign up to see the translation of definitions and examples into any language.The word "umbrella" starts with a "
u ".
symbol “u”
u
- symbol for atomic mass unit The carbon-12 atom has a mass of exactly 12
u , making it a standard reference for the atomic mass unit. - in physics, a symbol for the up quark In particle physics, the proton is composed of three quarks:
u u d.