The eighteen constituents through which sensory experience is produced: the six sense faculties (indriya); the six corresponding sense objects (ālambana); and the six sensory consciousnesses (vijñāna).

When grouped these are: the eye constituent, form constituent, and eye consciousness constituent; the ear constituent, sound constituent, and ear consciousness constituent; the nose constituent, smell constituent, and nose consciousness constituent; the tongue constituent, taste constituent, and tongue consciousness constituent; the body constituent, touch constituent, and body consciousness constituent; the thinking-mind constituent, dharma constituent, and thinking-mind consciousness constituent.

See also “constituents.”