Tika-paṭṭhāna

Pāli term meaning literally ‘origins of triads’. First part of the Paṭṭhāna, the final book of the Abhidharma Piṭaka of the Pāli Canon. It is a highly technical text, consisting of a minutely detailed analysis of the doctrine of conditionality (pratītya-samutpāda). Its commentary was composed by Buddhaghoṣa in the 5th century.

A Dictionary of Buddhism, Oxford University Press, 2003, 2004 (which is available in electronic version from answer.com)