From The Collaborative International Dictionary of English v.0.48 :
Supra \Su"pra\, adv. [L.; akin to super. See Super-.]
Over; above; before; also, beyond; besides; -- much used as a
prefix.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
supra
adv 1: at an earlier place; "see above" [syn: above, supra]
[ant: below]