alternating

verb

1. (form-of, gerund, participle, present)present participle and gerund of alternate

adj

1. (not-comparable)That alternates.

   “alternating motion”

   “alternating system”

2. (not-comparable)Having a planar diagram whose crossings alternate between "over" and "under" as one travels along the knot.
3. (not-comparable)Having terms that alternate between positive and negative.
4. (not-comparable)Whose value is zero when any two adjacent arguments are equal.