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Petri dish
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shallow dish on which biological cultures may be grown and/or viewed
A Petri dish is a shallow, flat dish used in laboratories to grow and observe biological cultures, such as bacteria or other microorganisms. It matters because it's a fundamental tool that allows scientists to study living organisms in a controlled environment, which has been essential for medical research, disease diagnosis, and understanding how life works.
AI-generated from the Wikipedia summary — may contain errors.
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Encyclopedic overview
A glass Petri dish, Mac Conkey agar and medium
A Petri dish (alternatively known as a Petri plate or cell-culture dish) is a shallow transparent lidded dish that biologists use to hold growth medium in which cells can be cultured, originally, cells of bacteria, fungi, and small mosses.
Excerpted from Wikipedia’s “Petri dish” article, available under the CC BY-SA 4.0 licence.