Definition: alternative name given to the treatise on grammar written by Sarvavarman who is believed to have lived in the days of the Sātavāhana kings. The treatise is popularly known by the namc Kātantra Vyākaraṇa. The available treatise,viz. Kalpasūtras, is much similar to the Kātantra Sūtras having a few changes and additions only here and there.It is rather risky to say that Kalāpa was an ancient system of grammar which is referred to in the Pāṇini Sūtra कलापिनोण् P. IV.3.108. For details see कातन्त्र.