from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The seventh Sunday after Easter, commemorating the descent of the Holy Spirit upon the disciples. Also called Whitsunday.
- n. Judaism See Shavuot.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. The particular (Jewish) Pentecost 49 days (inclusive) after the resurrection of Jesus on the (Jewish) Day of First Fruits, when (in Christian teaching) the Holy Spirit descended upon the Apostles with miraculous effects including the ability to explain the Gospel intelligibly in languages they did not know; or a similar occasion since.
- proper n. Christian festival (also known as Whitsun or Whitsunday), which commemorates the descent of the Holy Spirit upon the Apostles (see above definition).
- proper n. Pentecostal manifestation, such as in a church service.
from the GNU version of the Collaborative International Dictionary of English
- n. A solemn festival of the Jews; -- so called because celebrated on the fiftieth day (seven weeks) after the second day of the Passover (which fell on the sixteenth of the Jewish month Nisan); -- hence called, also, the Feast of Weeks. At this festival an offering of the first fruits of the harvest was made. By the Jews it was generally regarded as commemorative of the gift of the law on the fiftieth day after the departure from Egypt.
- n. A festival of the Roman Catholic and other churches in commemoration of the descent of the Holy Spirit on the apostles; which occurred on the day of Pentecost; -- called also Whitsunday.
from The Century Dictionary and Cyclopedia
- n. In the New Testament, a Jewish harvest festival called in the Old Testament (Deut. xvi. 10, etc.) the feast of weeks (Hebrew Shabuoth), and observed on the fiftieth day after the 14th of Nisan, the date of the celebration of the Passover.
- n. The feast of Whitsunday, a festival of the Christian church, observed annually in remembrance of the descent of the Holy Ghost upon the apostles during the feast of Pentecost.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. seventh Sunday after Easter; commemorates the emanation of the Holy Spirit to the Apostles; a quarter day in Scotland
- n. (Judaism) Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments
Middle English pentecoste, from Old English Pentecosten, from Late Latin Pentēcostē, from Greek pentēkostē (hēmerā), fiftieth (day), feminine of pentēkostos, fiftieth, from pentēkonta, fifty.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek πεντηκοστή (pentēkostē, "fiftieth"). (Wiktionary)