centésimoPronunciation: /sɛnˈtɛsɪməʊ, senˈtesimo, θen-/Definition of centésimo noun (plural centésimos) a monetary unit of Uruguay and Panama, equal to one hundredth of a peso in Uruguay, and one hundredth of a balboa in Panama. Origin:Spanishcentésimo in other Oxford dictionaries Definition of centésimo in the US English dictionary