Grammatical Analysis
Jaratā: [f.] Aging; decay; oldness. Formed by jara (old age, decay) + tā (abstract noun suffix, -ness).
Orthodox Definition
Jaratā is the third characteristic material phenomenon (lakkhaṇa-rūpa). It is the inherent nature of decay built into the fabric of reality.
Theravāda distinguishes between two types of aging:
- Pākaṭa-jaratā (Evident aging): The conventional aging seen over a lifetime—gray hair, wrinkles, broken teeth, and failing organs.
- Paṭicchanna-jaratā (Hidden aging): The Abhidhammic concept of momentary aging. Every single physical particle and mind-moment goes through three microscopic phases: arising (uppāda), presence/aging (ṭhiti/jaratā), and dissolution (bhaṅga). Jaratā is that infinitesimal moment of “presence” where the phenomenon is already decaying before it instantly vanishes.
The realization that one’s body is decaying on a microscopic level billions of times per second shatters attachment to youth and physical beauty.
Textual References
- Abhidhamma: Dhammasaṅgaṇī – Isolating decay as a specific material reality to be comprehended.
- Commentary: Atthasālinī – Comparing momentary decay to the imperceptible wearing away of a stone hit by water drops.