subadditivity

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noun

The state of being subadditive.

Opposite
superadditivity
Scrabble 23
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Meanings

nounsubadditivity (countable and uncountable, plural subadditivities)

plural subadditivities

  1. uncountableThe state of being subadditive.
  2. countableuncountableThe statement that a function is subadditive.

    An outer measure μ^* satisfies a property called “subadditivity”, viz.: μ^* big (∪ⱼ₌₁ ᪲A_j big )<∑ⱼ₌₁ ᪲μ^*(A_j). If the less-than-or-equal sign were replaced with an equal sign then the property would be “additivity” instead.

Synonyms & antonyms

Opposite
superadditivity

Origin

From sub- + additivity.

Full word history & related roots →
Cite this entry
APA

subadditivity. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/subadditivity

MLA

“subadditivity.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/subadditivity. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “subadditivity,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/subadditivity.

Source: subadditivity on Wiktionary, CC BY-SA 4.0.