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surface marker JUST WRITTEN FOR YOU

/ˈsɜːrfɪs ˈmɑːrkər/ · sur·face · mar·ker
noun
  1. A buoy or other floating object used to mark the position of an underwater hazard or feature. The surface marker indicated the location of the submerged reef.
noun
  1. A visual indicator on the surface of a liquid, such as a chemical reaction or a change in temperature. The surface marker on the thermometer indicated a sudden change in temperature.
noun
  1. A device used to mark the surface of a material, such as a paint or a coating. The surface marker helped the artist create a precise pattern on the canvas.
Did you know? Surface markers have been used in various contexts, including navigation, science, and art, to provide visual cues and warnings.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 15, 2026