overstain

English

Etymology

From over- +‎ stain.

Verb

overstain (third-person singular simple present overstains, present participle overstaining, simple past and past participle overstained)

  1. (transitive) To stain the surface of; besmear.
    • 2004, Robert N. Trigiano, Dennis J. Gray, Plant Development and Biotechnology - Page 46:
      It is very difficult to overstain with safranin. Wash slides with several changes of water, until water is no longer pink.

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