Which term indicates a musical instruction for 'strongly accented' notes?

The term that means 'strongly accented' notes is marcato. Marcato is a dynamic marking that instructs musicians to play a note or a series of notes with strong emphasis and a slightly detached style, making it stand out more than surrounding notes. This instruction enhances the expressiveness of a musical piece, adding intensity and often a driving force to the performance.

In contrast, martellato refers to a distinct bowing technique in string instruments that produces a sharp, accented note but implies a specific articulation that can differ from the broader concept of 'strongly accented.' Meno is an Italian word meaning "less," and is usually used in the context of dynamics to indicate a decrease, which does not relate to the idea of accentuation. Leggero conveys a style that is light or nimble, often implying a delicate or graceful execution rather than a strong emphasis. Thus, marcato most accurately describes the directive for ‘strongly accented’ notes in a musical context.