Definitions for arabidopsis
Arabidopsis, genus Arabidopsis(noun)
a genus of the mustard family having white or yellow or purplish flowers; closely related to genus Arabis
U.S. National Library of Medicine
A plant genus of the family BRASSICACEAE that contains ARABIDOPSIS PROTEINS and MADS DOMAIN PROTEINS. The species A. thaliana is used for experiments in classical plant genetics as well as molecular genetic studies in plant physiology, biochemistry, and development.