(n.) A minute portion of time; a point of time; an instant; as,
at thet very moment.
(n.) Impulsive power; force; momentum.
(n.) Importance, as in influence or effect; consequence; weight
or value; consideration.
(n.) An essential element; a deciding point, fact, or
consideration; an essential or influential circumstance.
(n.) An infinitesimal change in a varying quantity; an increment
or decrement.
(n.) Tendency, or measure of tendency, to produce motion, esp.
motion about a fixed point or axis.
