upa-sthā́na n. the act of placing one's self near to, going near, approach, access (upa-sthā́naṃ-√ kṛ, to give access or scope for, [ŚBr. i])
coming into the presence of, going near to (in order to worship), worshipping, waiting on, attendance, [ŚBr.]; [KātyŚr.]; [ĀśvŚr.]; [MBh.] &c.
standing near, presence, proximity, nearness, [Yājñ.]; [Hcat.]
staying upon or at, abiding, a place of abiding, abode, [Nir.]
assembly, [MBh.]; [R.]; [BhP.]
any object approached with respect, a sanctuary, abode (of a god), [PārGṛ.]
a particular part of the Saṃdhyā, [MW.]