addition n. the process of adding numbers; a thing that has been added.
Words in the Wild: There was no doubt about it—Anna was a packrat. Among other things, she had a collection of broken coffeemakers, a stash of flattened cardboard boxes, and every edition of the past year’s Globe & Mail piled in the dining room. If she kept it up, she’d soon need to build an addition on the house!
I’ve often come across “cute, burbling editions to the family” and the like while editing. And though a baby is, after a fashion, the latest edition of the family periodical, it’s probably best to dust off addition for this kind of use.
Still vexed? You can find a complete list of the Word Blog’s lexical vexations here.