adjective primeval, of old; for ever, eternal DN.ii.240, DN.ii.244; SN.i.189 (cp. K.S. i.321: porāṇaka santānaṃ vā paṇḍitānaṃ dhamma); Dhp-a.i.51.

for sanātana (cp. purātana); Idg. *seno = Gr. ε ̔́νος old; Sk. sanaḥ in old times; Av. hana old, Lat. seneo, senex (“senile”), senatus; Goth sineigs old; Oir. sen old