n. Any one of a group of enzymes that produce bioluminescence by oxidizing luciferin.
the GNU version of the Collaborative International Dictionary of English
n. an enzyme which catalyzes the oxidation of luciferin, thereby producing bioluminescence.
The Century Dictionary and Cyclopedia
n. One of the two special substances by the reactions of which light is supposed to be produced by fireflies.
Word Usage
"To track leukemia onset and response to therapy, the scientists tagged all leukemia cells with a gene from fireflies that encodes an enzyme called luciferase, which makes leukemia cells glow and detectable by a ultrasensitive camera."