rūpa
Materiality, form
[ ROO-pa ]
Seeing it in life
Rūpa is what is ‘molested’ by cold, heat, hunger, etc. Twenty-eight rūpas are taught: 4 great elements, 24 derived (upādā-rūpa) including sense faculties, sense objects, sex, heart base, life faculty, nutriment, space, intimation, mutability, and characteristics.
In short
The 28 physical phenomena analysed in Abhidhamma.
The analysis
Twenty-eight kinds of matter, analysed the way mind is analysed — not assumed solid stuff but a specific, enumerated list. Four great elements (solidity, cohesion, temperature, motion) and twenty-four derived types, including the sense faculties, sense objects, the heart-base, and the life-faculty. Rūpa does not know its object — unlike citta and cetasika, it is process without awareness.
Where it sits
Rūpa is the third paramattha, paired most directly with felt experience: hadaya-vatthu is the material support for mind-door consciousness, and pasāda-rūpa in each sense organ is what phassa depends on physically. The somatic sensation under a feeling-tone is rūpa; the registering of it as pleasant or unpleasant is vedanā, a cetasika. Always paired, never the same thing.
The tightness across the chest at 3am is rūpa — matter conditioned by prior kamma, mind, temperature, and nutriment, doing what matter does. The felt unpleasantness of that tightness is a separate event, vedanā. Somatic work that asks you to notice sensation before story is, in Abhidhamma terms, asking you to meet rūpa and vedanā clearly, before saṅkhāra builds anything on top.
Commonly mistaken for
The body as commonly understood. Rūpa includes things not usually thought of as 'the body' — space, mutability, the intimations that let mind express as gesture and speech.
Passive, inert stuff. Kammaja-rūpa means some material process is actively produced by past volitional action, not simply sitting there.
Abhidhammattha Saṅgaha VI; Visuddhimagga XI.
Related terms