D defs.my
Entry 2 senses Webster, 1913

Stimulation

/stĭmˌ-yəl-āsh'-ən/ · Stim·u·la·tion · IPA /ˈstɪm.jəˈleɪ.ʃən/
01 n. The act of stimulating, or the state of being stimulated.
  1. 1.
    The act of stimulating, or the state of being stimulated.
  2. 2.
    The irritating action of various agents (stimuli) on muscles, nerves, or a sensory end organ, by which activity is evoked; especially, the nervous impulse produced by various agents on nerves, or a sensory end organ, by which the part connected with the nerve is thrown into a state of activity; irritation.(Physiol.)