Adjective maximum has 1 sense
  1. maximal, maximum - the greatest or most complete or best possible; "maximal expansion"; "maximum pressure"
    Antonyms: minimal, minimum, borderline, marginal, bottom, least, lowest, smallest, negligible, nominal, token, tokenish, stripped, stripped-down
,Noun maximum has 3 senses
  1. maximum, upper limit - the largest possible quantity
    --1 is a kind of extremum, peak; large indefinite quantity, large indefinite amount
    Antonyms: minimum, lower limit
    Derived forms: verb maximize2, verb maximize1, verb maximise1, verb maximise2
  2. utmost, uttermost, maximum, level best - the greatest possible degree; "he tried his utmost"
    --2 is a kind of limit, bounds, boundary
    Derived forms: verb maximize2, verb maximize1, verb maximise1, verb maximise2
  3. maximum - the point on a curve where the tangent changes from positive on the left to negative on the right
    --3 is a kind of
    limit
    Antonyms: minimum
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