WordNet-Online
Definitions from WordNet
Adjective semicentennial has 1 sense
Noun semicentennial has 1 sense
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Definitions from the WebSemicentennialDefinition:A semicentennial refers to a period of fifty years, or something that occurs every fifty years. Examples:
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semiautomated semiautomatic semiautomatic firearm semiautomatic pistol semiautonomous semibreve semic semicentenary semicentennial semicircle semicircular semicircular arch semicircular canal semicircular canals semicolon semicoma semicomatose
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