Relating to a choice between two or more possibilities. / (linguistics) Presenting two or more alternatives. / Other; different from something else.

A situation which allows a mutually exclusive choice between two or more possibilities; a choice between two or more possibilities. / One of several mutually exclusive things which can be chosen.

The reciprocal succession of (normally two) things in time or place; the act of following and being followed by turns; alternate succession, performance, or occurrence

(medicine, now historical) A medicine or treatment which works by changing processes within the body, rather than by evacuating something etc.

Causing alteration. / (medicine) Gradually changing, or tending to change, a morbid state into a healthy one.

In reciprocal succession; succeeding by turns; in alternate order. / (mathematics) By alternation; when, in a proportion, the antecedent term is compared with antecedent, and consequent.

The act of altering or making different. / The state of being altered; a change made in the form or nature of a thing; a changed condition.

Heated or angry dispute

Happening by turns; one following the other in succession of time or place; first one and then the other (repeatedly)

That which alternates with something else; vicissitude. / (US) A substitute; an alternative; one designated to take the place of another, if necessary, in performing some duty.