- the act or process of alternating or the state of being alternated.
- alternate succession; repeated rotation: the alternation of the seasons.
- Electricity. a single fluctuation in the absolute value of an alternating current or voltage from zero to a maximum and back to zero, being equal to one half cycle.
- Linguistics. variation in the form of a linguistic unit as it occurs in different environments or under different conditions, as between the -ed and -en forms of the past participle in danced and spoken or between the (t) and (d) pronunciations of the past tense suffix -ed in hopped and rubbed.
- successive change from one condition or action to another and back again repeatedly
- logic another name for disjunction (def. 3)
mid-15c., from Old French alternacion, from Latin alternationem (nominative alternatio), noun of action from past participle stem of alternare (see alternate (v.)).
- Successive change from one thing or state to another and back again.