extremum
1. [ noun ] the point located farthest from the middle of something
Synonyms: extreme extreme_point
Related terms: extremity vertex
2. [ noun ] the most extreme possible amount or value
Synonyms: peak
Examples:

"voltage peak"

Related terms: limit maximum minimum peak
Similar spelling:   extreme
  extremity
  extremist
  extremism
  extremely
  exothermic
  exothermal
  extrude
  exoteric