noun.
A rising; a rise; a soaring.
noun.
A spring; a fountainhead; a wellhead; any collection of water on or under the surface of the ground in which a stream originates.
noun.
A first cause; an origin; one who or that which originates or gives rise to anything.
To rise, as a hawk; swoop; in general, to swoop down; plunge; sink; souse. See souse.
To spring; take rise.
To plunge down; souse.
noun.
In geometry, a place of transition from space of n ± 1 into space of n dimensions.
noun.
In electricity: That point or region in an electric circuit at which abrupt difference of potential exists so that current flows from it on one side through the circuit and toward it through the circuit from the other side. Thus a dynamo generator, a voltaic cell, or a charged condenser is a source of current in the circuit in which they are placed.
noun.
In the case of current flow in plane sheets, a point at which the current enters the sheet.