(biochemistry, organic chemistry) A class of organic compounds having a structure of 17 carbon atoms arranged in four rings; they are lipids, and occur naturally as sterols, bile acids, adrenal and...

A loss of adhesion, especially that which leads to dehiscence

plural of tahil

A toy or other object intended to be aimlessly manipulated with the hands, in order to provide a pleasant distraction or relief from anxiety, frustration, boredom, etc.