upa-√ sad P. -sīdati (Ved. Pot. 1. pl. -sadema; impf. -asadat) to sit upon (acc.), [RV. vi, 75, 8]; to sit near to, approach (esp. respectfully), revere, worship, [RV.]; [AV.]; [TS.]; [ŚBr.] &c., [MBh.]; [Ragh.] &c.; to approach (a teacher in order to become his pupil), [Kathās.] ; to approach asking, request, crave for, [RV. i, 89, 2]; [vii, 33, 9]; [TS. ii]; [ŚBr. ii]; to approach in a hostile manner, [BhP. vi, 3, 27]; to possess, [RV. viii, 47, 16]; [AV. iii, 14, 6]; to perform the Upasad ceremony (see below), [TS. vi, 2, 3, 4] : Caus. -sādayati, to place or put upon or by the side of [TS.]; [TBr.]; [ŚBr.] &c.; to cause to approach, lead near (see upa-sādita).
upa-sád mfn. approaching (respectfully), worshipping, serving, [AV.]; [VS. xxx, 9]
upa-sád (t), m. N. of a particular fire (different from the Gārhapatya, Dakṣiṇāgni, and Āhavanīya), [VahniP.]
upa-sád (t), f. attendance, worship, service, [RV. ii, 6, 1]
settlement (?), [AV. vi, 142, 3]
siege, assault, [ŚBr. iii]; [AitBr.]; [Kāṭh.]
N. of a ceremony or sacrificial festival preceding the Sutyā or pressing of the Soma (it lasts several days, and forms part of the Jyotiṣṭoma), [VS. xix, 14]; [TS.]; [ŚBr.]; [KātyŚr.] &c.