Recent Examples on the WebPer Popular Science, the team then covered the opening with a small piece of glass called a coverslip. Elizabeth Gamillo, Smithsonian Magazine, 9 Dec. 2021 Finally, the technician would mount a thin glass coverslip over the slides to protect the sections. Lynne Parenti, Smithsonian, 14 Mar. 2018 At one time, coverslips, mirrors and lenses ruled the world of microscopy.Discover Magazine, 23 Feb. 2018