Breadcrumb Home > Dictionary > Index U upstroke: Meaning and Definition of Find definitions for: up•stroke Pronunciation: (up'strōk"), [key] — n. an upward stroke, esp. of a pen or pencil, or of a piston in a vertical cylinder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: upstroke (Thesaurus) upstretched upsurge TrendingHere are the facts and trivia that people are buzzing about. The Book of Philippians: Summary Current Events This Week: May 2023 Preamble of the United Nations Charter Queen Victoria Books of the Bible: New Testament Books in Order The 88 Recognized Constellations ✖ Related Content Daily Word Quiz: miasma Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language