harmonics

/HH AA0 R M AA1 N IH0 K S/
noun
  1. 1

    A component frequency of the signal of a wave that is an integer multiple of the fundamental frequency.

  2. 2

    The place where, on a bowed string instrument, a note in the harmonic series of a particular string can be played without the fundamental present.

  3. 3

    One of a class of functions that enter into the development of the potential of a nearly spherical mass due to its attraction.

  4. 4

    One's child.

noun
  1. 1

    The science of musical sounds

Source: https://en.wiktionary.org/wiki/harmonic, https://en.wiktionary.org/wiki/harmonics