o·give 
(ōjīv′)
(ōjīv′)n.
1. Statistics
a. A distribution curve in which the frequencies are cumulative.
b. A frequency distribution.
2. Architecture
a. A diagonal rib of a Gothic vault.
b. A pointed arch.
[Middle English ogif and French ogive, diagonal rib of a vault, both from Old French augive, probably from Vulgar Latin *obviātīva, from Late Latin obviāta, feminine past participle of obviāre, to resist; see OBVIATE.]
o·gival adj.