chronology
n. காலக்கணிப்பு முறை நுல், காலவரிசை முறை, காலவரிசைப் பட்டி.
Chro*nol"o*gy, n.; pl. Chronologies. Etym: [Gr. chronologie.] Defn: The science which treats of measuring time by regular divisions or periods, and which assigns to events or transactions their proper dates. If history without chronology is dark and confused, chronology without history is dry and insipid. A. Holmes.