(music) A chord progression, l–vi–IV–V, used in Western popular music, particularly common in the 1950s and early 1960s.

Alternative form of 50s

plural of 50 cent

(US, derogatory) Cheap.

(derogatory) Synonym of wumao: A member of the 50 cent army.

(physics) The naturally-occurring radioactive isotope of vanadium, ⁵⁰₂₃V, having twenty-three protons and twenty-seven neutrons; its half-life is 1.5 x 10¹⁷ years

(mathematics) Synonym of pentacontagon: A 50-sided polygon.

(physics) A minor stable isotope of titanium, ⁵⁰₂₂Ti, having twenty-two protons and twenty-eight neutrons; it amounts to about 5% of the element in nature

Internet users who are paid by the authorities of the People's Republic of China to spread propaganda and disinformation on their behalf.

Alternative form of 50 cent army