Which term indicates playing in a moderately loud volume?

The term that indicates playing in a moderately loud volume is "mezzo forte." In musical terminology, "mezzo" means "medium," and "forte" means "loud." Therefore, "mezzo forte" describes a dynamic level that is neither soft nor extremely loud, but rather a balanced medium loudness.

Understanding dynamics is crucial in music as they convey emotion and nuance in performance. "Forte" refers to a loud volume, while "piano" indicates a soft volume. "Pianissimo" denotes an even softer playing than "piano." Thus, mezzo forte serves as a critical reference point in dynamics, providing performers with guidance on achieving the intended expressive quality of the music.