Final answer:
In music theory, an interval more than a whole step is called augmented. This term describes an interval that is one half step larger than either perfect or major intervals.
Step-by-step explanation:
When considering intervals in the context of melody in music theory, an interval that is more than a whole step is often referred to as augmented. An augmented interval is one half-step larger than perfect or major intervals. For example, if you take a major second (which is a whole step) and raise it by a half-step, you would have an augmented second. This is distinct from consonant and dissonant intervals, which refer to the harmonic pleasantness or tension between two notes played simultaneously, rather than their size. As for the term 'harmonic,' it is used to describe anything related to harmony, such as chords or the harmonic series, and harmonics specifically refer to frequencies that are integer multiples of a fundamental frequency.