Pronunciation

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Plain form
circulate

Third-person singular
circulates

Past tense
circulated

Past participle
circulated

Present participle
circulating

  1. (intransitive) If something circulates, it moves without stopping through a space or system.
    The lungs move air in and out, and the heart beats to circulate the blood.
    A large fan kept the air circulating in the room.
  2. (intransitive) If information, disease, etc. circulates, it spreads from one person to another.
    The letter was widely circulated in American prisons.
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