hormones

/HH AO1 R M OW0 N Z/
noun
  1. 1

    Any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.

  2. 2

    A synthetic compound with the same activity.

  3. 3

    Any similar substance in plants.

Source: https://en.wiktionary.org/wiki/hormone, https://en.wiktionary.org/wiki/hormones