Definition of "galactosidase" [galactosidase]

• An enzyme that catalyzes the hydrolysis of a galactoside. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Cre reporter mouse expressing a nuclear localized fusion of GFP and beta-galactosidase reveals new derivatives of Pax3-expressing precursors."
• "You can tell because the synthesized DNA contained a lacZ gene for beta-galactosidase, making the pretty blue product."
• "You may still be able to enjoy soy milk and flour by taking an alpha galactosidase supplement (Beano), which reduces gas by facilitating digestion of the troublesome carbs."