- the radial distance between the tip of a gear tooth and the pitch circle of a gear or the pitch line of a rack.Compare dedendum.
- Also called addendum circle. an imaginary circle touching the tips of the teeth on a gear.
Origin of addendum
How to use addendum in a sentence
Overall, the plurality of voices—of young Helga and the author making revisions and addendums to the text decades later—mesh well.
He knew how I hated a talkative person, and yet he stampedes into the conversation with his amendments and addendums of syntax.Heart of the West|O. Henry