alternate

1. a. Being or succeeding by turns; one following the other in succession of time or place; by turns first one and then the other; hence, reciprocal. Source: opted

2. a. 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; as, the alternate members 1, 3, 5, 7, etc. ; read every alternate line. Source: opted

3. a. Distributed, as leaves, singly at different heights of the stem, and at equal intervals as respects angular divergence. Source: opted

4. n. That which alternates with something else; vicissitude. Source: opted

5. n. A substitute; one designated to take the place of another, if necessary, in performing some duty. Source: opted

6. n. A proportion derived from another proportion by interchanging the means. Source: opted

7. v. t. To perform by turns, or in succession; to cause to succeed by turns; to interchange regularly. Source: opted

8. v. i. To happen, succeed, or act by turns; to follow reciprocally in place or time; -- followed by with; as, the flood and ebb tides alternate with each other. Source: opted

9. v. i. To vary by turns; as, the land alternates between rocky hills and sandy plains. Source: opted

10. adj. every second one of a series Source: wordnet

11. adj. serving or used in place of another Source: wordnet

12. adj. occurring by turns; first one and then the other Source: wordnet

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