Definition of stimming in English:

stimming

noun

mass noun
  • Behaviour consisting of repetitive actions or movements of a type that may be displayed by people with developmental disorders, most typically autistic spectrum disorders; self-stimulation.

    ‘stimming was part of her coping mechanism’

Origin

1970s: from stimulation or stimulatory + -ing.

Pronunciation

stimming

/ˈstɪmɪŋ/