only 1 use
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Definition
oriented straight up and down (90 degrees relative to the floor)
- But this is the dangerous part. lip to here he's always had something he could climb or scramble up or dodge around in case of a flank attack, but now comes an open space with no shelter and few verticals.p. 225.4
There are no more uses of "vertical" in Oryx and Crake.
Typical Usage
(best examples)