commentation noun3 •The act of making comments.The spirit of commentation, as has already been suggested, turns to questions of taste, of metaphysics, of morals, with far more avidity to physics. — 1837 •The work of a commentator. •The use of comments in source code.In-program commentation is another level of documentation that is compulsory, with standards being set regarding what should be included in source code. — 1997 formscommentations