A substitute; an alternative; one designated to take the place of another, if necessary, in performing some duty.
A replacement of equal or greater value or function.
A proportion derived from another proportion by interchanging the means.
That which alternates with something else; vicissitude.
Figures or tinctures that succeed each other by turns.
To vary by turns.
To perform by turns, or in succession; to cause to succeed by turns; to interchange regularly.
To perform an alternation (removal of alternate vertices) on (a polytope or tessellation); to remove vertices (from a face or edge) as part of an alternation.
To happen, succeed, or act by turns; to follow reciprocally in place or time; followed by with.
Other; alternative.
Distributed singly at different heights of the stem, and at equal intervals as respects angular divergence
Designating the members in a series, which regularly intervene between the members of another series, as the odd or even numbers of the numerals; every other; every second.
Happening by turns; one following the other in succession of time or place; first one and then the other (repeatedly)
A person who is not good enough to be considered proficient but may be useful as a backup.
A person who plays second string. A person who is kept on a sports team as a backup in case a "first-string" player is unavailable.