the size of the observable universe
scientists often work with phenomena that are not directly observable
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This trend is observable in the stock performance, which has seen an increase of approximately 50% year to date, significantly surpassing the S&P 500’s 4% rise.—Trefis Team, Forbes.com, 27 June 2025 But how can trees help indicate this increase in carbon dioxide in an easily observable manner?—Stephanie Edwards, Discover Magazine, 6 June 2025 Collectively, these changes affected virtually every major institution that shaped Americans’ daily lives—especially institutions that had offered, for generations, ways of understanding and navigating observable differences between human societies, cultures, and bodies.—Literary Hub, 9 June 2025 There’s also ample observable evidence that yawning is contagious.—Mack Degeurin, Popular Science, 5 June 2025 See All Example Sentences for observable
Word History
Etymology
borrowed from Middle French & Latin; Middle French, "that must or can be observed," borrowed from Latin observābilis "capable of being observed," from observāre "to give attention to, watch carefully, observe" + -bilis "capable (of acting) or worthy of (being acted upon)" — more at -able
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