A set or multitude of things, which cannot be expressed either as numerable or innumerable- it means 'one' ('one' is not counted in 'number').
yaḥ parimāṇāviśeṣo na kati nāpyakatīti śkyate vaktxiṃ so'vktavyakaḥ sa caika iti tatsāncitā avaktavyakasañcitāḥ.(Sthā 3.7 Vṛ Pa 99)
- Akarisañcita.