subaction

noun2

1. •
   An action that makes up part of a more complex action.

   • This is so because efforts, exertions, and endeavorings, if they were to exist, would need to be actions themselves, or parts of actions, or subactions or behaviors of some sort […] — 2012
2. •
   (no longer used) The act of reducing to any state, such as of mixing two bodies completely.

   • there are of concoction two periods ; the one assimilation , or absolute conversion and subaction ; the other maturation — 1627