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noun Colony counter n. (Microbiology) An instrument designed to conveniently count or assist counting colonies (9) of microorganisms on a plate containing a gelled growth medium. One variety uses a pencil-like rod with a metal tip, which is connected by an electrical connection to the gelled growth medium; when touched to a colony (9) on the plate, the completion of the electrical circuit causes an increment of 1 unit on the readout of the colony counter.
Collaborative International Dictionary of English 0.48
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