In alternating scenes, the audience watches both the scholar's theory—and the 19th-century reality—unfolding.
Complete three sets of 10 to 12 reps on each side, alternating legs, moving forward with a step in between each kick.
He had spent nearly 20 years covering politics in the Bay State, alternating between the Associated Press and the Boston Globe.
1550s, present participle adjective from alternate (v.). Alternating current is recorded from 1839.
1510s, from Latin alternatus "one after the other," past participle of alternare "to do first one thing then the other; exchange parts," from alternus "one after the other, alternate, in turns, reciprocal," from alter "the other" (see alter). Alternate means "by turns;" alternative means "offering a choice." Both imply two kinds or things.
1718, "that which alternates (with anything else)," from alternate (adj.). Meaning "a substitute" is first attested 1848.