Definition of initiator in US English:



  • 1A person or thing that initiates someone or something.

    • ‘For this support the initiators of the plan are most grateful.’
    • ‘The initiators were mostly men of the left: revolutionary syndicalists and former Marxists.’
    • ‘Women managers are effective social initiators and their biggest strength is communication.’
    • ‘The meeting will be participated in by foreign ministers from six countries, Indonesia, as the initiator, the Philippines, Australia, New Zealand, Papua New Guinea and the newly born state of East Timor.’
    • ‘Three cultural institutes in Sofia, the Italian, Czech and French, were the initiators of the project for cooperative opera singing, gathering famous opera singers from Italy, France, the Czech Republic and Bulgaria.’
    • ‘According to the initiators of the idea, Sofia is divided into too many parts and this poses difficulties.’
    • ‘As initiators of culture and producers of the societies in which we live, the destiny of modern man is our conscious choice.’
    • ‘Producers, like journalists, are only observers, not initiators.’
    • ‘The initiators are still looking for a prospective Palestinian chief warden.’
    • ‘Should that thus mean that the initiators of the boycott motion have failed since the vote has been revoked?’
    • ‘Many of the workers and union officials targeted in the witch-hunts had been leaders and initiators of the militant struggles of the 1930s and early 1940s.’
    • ‘Skill-building and low opportunity costs are likely economic reasons for initiators to start a programming project.’
    • ‘The once excited initiators of public interest lawyering began turning their attention to other ideas, including institutionalizing alternative dispute forums.’
    • ‘He was the initiator of the scheme and probably its architect.’
    • ‘Another red herring is the search for the main initiators of regulatory excess.’
    • ‘The initiators of this alarm have been active for many decades in the defence of human rights inside the State of Israel and beyond.’
    • ‘After creating some initial noise its initiator immediately moved to disband it.’
    • ‘Sudden role reversals make it possible for the initiator to rationalise contradictions.’
    • ‘Getting the required recognition and accreditation is one of the challenges before the initiators of this movement.’
    • ‘They tend to be initiators and leaders of play, at least in the beginning, but are willing to follow others as well.’
    prime mover, motivator, architect, designer, deviser, planner, shaper, inventor, maker, producer, contriver, mastermind, originator, author, creator, founder, pioneer, father, mother, founding father, agent
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    1. 1.1Chemistry A substance which starts a chain reaction.
      • ‘Furthermore, graft polymers can be produced by the use of high molecular radical polymerization initiators from which an alkoxyamine group suspends.’
      • ‘For the synthetic studies, we made the peptides by polymerising an activated form of the amino acid (the N carboxyanhydride) using a nucleophile as an initiator.’
      • ‘The reaction is started by an initiator, usually a free radical R, that bonds to one of the carbon atoms of ethylene.’
      • ‘On another front, progress has recently been made in rendering polycondensation itself a controlled, living process by the judicious choice of monomer and well-defined molecular initiators.’
      • ‘Macrodiols with different thermal characteristics were prepared using ring-opening polymerization of cyclic diesters or lactones with a low molecular weight diol as an initiator.’
      cause, agent, instrument, driver, originator, generator
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    2. 1.2 An explosive or device used to detonate a larger one.
      • ‘They're using cell phones as initiators to set off explosive devices when we get down on them.’
      origin, place of origin
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