Scholium
From BiblePortal Wikipedia
Webster's Dictionary [1]
(1): ( n.) A marginal annotation; an explanatory remark or comment; specifically, an explanatory comment on the text of a classic author by an early grammarian.
(2): ( n.) A remark or observation subjoined to a demonstration or a train of reasoning.
The Nuttall Encyclopedia [2]
A marginal note explanatory of the text of a classic author.