plural of open book

plural of open book decomposition

(mathematics, topology) A decomposition of a 3-manifold into a link and a fibration over the circle by surfaces bounded by that link.

plural of open compound

(uncountable) A chess opening characterized by the moves 1.e4 e5, in which both White and Black move their king's pawn to the fourth rank with their first move.

(television) An opening segment shown before the opening credits.

A museum where the exhibitions are located outdoors.

Sufficient money can accomplish anything.

plural of opera house

A method of aiming an artillery piece with the target in sight (direct fire), as opposed to indirect fire where the target is not visible.