1. altern- + -ation.
2. => one after the other, by turns.
3. Alternate means "by turns;" alternative means "offering a choice." Both imply two kinds or things.
- alternation (n.)
- mid-15c., from Old French alternacion, from Latin alternationem (nominative alternatio), noun of action from past participle stem of alternare (see alternate (v.)).
- 1. The alternation of sun and snow continued for the rest of our holiday.
- 2. Light and shade come in swift alternation ; Days and months flash by as quickly as a weaver's shuttle.
- 3. There is an alternation of black and white stripes in that cloth.
- 4. This alternation feature is commonly related to emplacement of C - shaped rolls.
- 5. These modifications include the chemical alternation of the bases.
[ alternation 造句 ]