- Pentecost
- O.E. Pentecosten "Christian festival on seventh Sunday after Easter," from L.L. pentecoste, from Gk. pentekoste hemera "fiftieth day," fem. of pentekostos, from pentekonta "fifty," from pente "five." The Hellenic name for the O.T. Feast of Weeks, a Jewish harvest festival observed on 50th day of the Omer (see Lev. xxiii:16). Pentecostal in ref. to "Christian sect emphasizing gifts of the Holy Spirit" (Acts ii) is attested from 1904.