A point of a conic at which rays reflected from a curve or surface converge.
The fact of the convergence of light on the photographic medium.
The most important word or phrase in a sentence or passage, or the one that imparts information.
The quality of the convergence of light on the photographic medium.
A point at which reflected or refracted rays of light converge.
The exact point of where an earthquake occurs, in three dimensions (underneath the epicentre).
The status of being the currently active element in a user interface, often indicated by a visual highlight.
Concentration of attention.
An object used in casting a magic spell.
To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane.
To transfer the input focus to (a visual element), so that it receives subsequent input.
To direct attention, effort, or energy to a particular audience or task.
To concentrate one’s attention.
To concentrate during a task.
To cause (rays of light, etc) to converge at a single point.
To aggregate figures of accounts.
The edge or border of any flat surface.
A permissible difference; allowing some freedom to move within limits.
The yield or profit; the selling price minus the cost of production.
margin of victory
That which is ancillary; periphery.
The edge defining inclusion in or exclusion from a set or group.
The edge of the paper, typically left blank when printing but sometimes used for annotations etc.
A difference or ratio between results, characteristics, scores.
Collateral security deposited with a broker, to compensate the broker in the event of loss in the speculative buying and selling of stocks, commodities, etc.
To enter (notes etc.) into the margin.
To trade (securities etc.) on margin (collateral).
To add a margin to.