Definition of Pentecost
1 : shavuot
2 : a Christian feast on the seventh Sunday after Easter commemorating the descent of the Holy Spirit on the apostles —called also Whitsunday
Origin and Etymology of pentecost
Middle English, from Old English pentecosten, from Late Latin pentecoste, from Greek pentēkostē, literally, fiftieth day, from pentēkostos fiftieth, from pentēkonta fifty, from penta- + -konta (akin to Latin viginti twenty) — more at vigesimal
First Known Use: before 12th century
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