Definition of "upon" []

• On. See Usage Note at on. (preposition)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "These domestic Fairies _kept their marriages upon the same day_ as the Human Beings; _their children were born upon the same day_; and _upon the same day they wailed for their dead."
• "For it is of the nature of love when confronted by two alternatives one of which lays the stress upon personal advantage and the other _upon love itself_ apart from any personal advantage, whether one's own or another's, to choose, as the assumption upon which it shall live, the latter of these two alternatives."
• "“I think it depends upon yourself, ” said Siward, “upon your capacity for being, or for making people believe you to be exactly what they require."