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The Collaborative International Dictionary of English v.0.48 (gcide)

Alternate \Al"ter*nate\ (?; 277), v. t. [imp. & p. p.
{Alternated}; p. pr. & vb. n. {Alternating}.] [L. alternatus,
p. p. of alternare. See {Altern}.]
To perform by turns, or in succession; to cause to succeed by
turns; to interchange regularly.
[1913 Webster]

The most high God, in all things appertaining unto this
life, for sundry wise ends alternates the disposition
of good and evil. --Grew.
[1913 Webster]