Verified
Grammatical Analysis
Nimitta: [nt.] sign; mark; image; target; underlying cause; defining characteristic. From root mā (to measure, mark out).
Orthodox Definition
In Theravāda meditation architecture, Nimitta is the critical technical term for the meditation object or the mental image that the mind locks onto to develop concentration (samādhi).
While wandering in saṃsāra, the mind grabs onto the “signs of beauty” (subha-nimitta) or the “signs of irritation” (paṭigha-nimitta), which generate greed and hatred. In samatha practice, the meditator trains the mind to ignore those worldly signs and lock onto a pure, static meditation sign (like a colored disc or the breath).
As concentration deepens, the nimitta undergoes a profound psychological evolution, transforming from a physical object into a brilliantly clear, mind-generated image. This transformation is the exact metric used by orthodox meditation masters to gauge a practitioner’s proximity to jhāna.
Quote
parikammassa nimittaṃ ārammaṇattāti parikammanimittaṃ, kasiṇamaṇḍalādi.
“The sign which is the object of preparatory practice is called preparatory sign (parikammanimitta), such as an earth-kasiṇa disk.”tadeva cakkhunā diṭṭhaṃ viya manasā uggahetabbaṃ nimittaṃ, uggaṇhantassa vā nimittanti uggahanimittaṃ.
“That same sign, to be grasped by the mind as if seen by the eye, or the sign for one who grasps it, is called grasping sign (uggahanimitta).”tappaṭibhāgaṃ vaṇṇādikasiṇadosarahitaṃ nimittaṃ upacārappanānaṃ ārammaṇattāti paṭibhāganimittaṃ.
“The counter-part sign (paṭibhāganimitta) is similar to the grasping sign, free from kasiṇa faults such as color, etc., and is the object of access and absorption.”— Abhidhammatthasaṅgaha (Chapter IX, Nimittabhedavaṇṇanā)
Textual References
- Textual: Abhidhammattha-saṅgaha (Chapter IX, Nimittabhedavaṇṇanā) – Defining the three types of meditation signs: preparatory (parikamma), learning (uggaha), and counterpart (paṭibhāga) signs.
- Sutta: Mahāvedalla Sutta (MN 43) – Discussing the “signless” (animitta) liberation of mind, achieved by actively paying no attention to all signs.
- Canonical: Aṅguttara Nikāya (Tika Nipāta) – Warning that a monk must master the “nimitta of concentration” or his mind will scatter.
- Commentary: Visuddhimagga (Chapter IV) – The definitive source mapping the structural evolution of the meditation sign from the physical realm into the purely mental realm.