noun
EXAMPLES FROM CORPUS
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Another group of supervisors from light manufacturing industry are undertaking a conversion course to catering supervisor.
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At Seletar he had been flying Vildebeest torpedo bombers, and he now underwent a conversion course on to the more modern Beauforts.
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From now on all aircrew went through either a full conversion course or a short refresher course.
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I proved my ability in further education and attempted to gain a position on a conversion course .