ati-rātrá mfn. prepared or performed over-night, [RV. vii, 103, 7]
ati-rātrá m. an optional part of the Jyotiṣṭoma sacrifice
commencement and conclusion of certain sacrificial acts
the concluding Vedic verse chanted on such occasions, [AV.] &c.
N. of a son of Cākṣuṣa the sixth Manu.