Infusion

//ɪnˈfjuːʒən// noun

noun ·Common ·High school level

Definitions

Noun
  1. 1
    A product consisting of a liquid which has had other ingredients steeped in it to extract useful qualities. countable, uncountable

    "An extract of rooibos and chamomile makes a refreshing infusion."

  2. 2
    the act of infusing or introducing a certain modifying element or quality wordnet
  3. 3
    The act of steeping or soaking a substance in liquid so as to extract medicinal or herbal qualities. countable, uncountable
  4. 4
    (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force) wordnet
  5. 5
    The act of installing a quality into a person. countable, uncountable
Show 5 more definitions
  1. 6
    the process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water) wordnet
  2. 7
    A giving of money or other resources, typically a large amount, to an organization. countable, uncountable

    "He made a number of other changes at the Transit Police, including revamping audio equipment, moving the force to nine-millimeter semiautomatic weapons, and designing new uniforms. These changes were all part of a $40 million infusion into the Transit Police in 1990 from Governor Mario Cuomo."

  3. 8
    a solution obtained by steeping or soaking a substance (usually in water) wordnet
  4. 9
    The act of dipping into a fluid. countable, obsolete, uncountable
  5. 10
    The administration of liquid substances directly into a vein for medical purposes; perfusion. countable, uncountable

Synonyms

All synonyms
absorption and regurgitationafflatusaffusionanimating spiritanimationanimus

Example

More examples

"Samuel Johnson draws his own portrait as "a hardened and shameless tea drinker, who for twenty years diluted his meals with only the infusion of the fascinating plant; who with tea amused the evening, with tea solaced the midnight, and with tea welcomed the morning.""

Etymology

From Middle English infusioun, from Old French infusion, from Latin infusio, infusionem (“a pouring into, a wetting, a dyeing, a flow”), from infundo.

Related phrases

propofol infusion syndrome

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.