arista
edge
noun ah-REES-tah Rare
Origin: From Latin arista (ear of grain, sharp edge).
Also means
sharp point
Usage Note
Arista literally refers to the sharp edge where two surfaces meet, as on a stone block or geometric solid. Figuratively, las aristas de un problema means 'the sharp angles' or 'thorny aspects' of an issue — a common journalistic usage. Do not confuse with artista (artist).
Examples
"La arista del cubo era perfectamente recta."
Natural Translation
The edge of the cube was perfectly straight.
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