| 释义 |
de·den·dum
\də̇ˈdendəm, dēˈ-\ noun
(-s)
Etymology: Latin, neuter of dedendus, gerundive of dedere to give up, deliver, from de from, away + -dere (from dare to give); from the contrast with the addendum of a gear tooth — more at de-, date
: the root of a gear tooth; also : the distance between the dedendum circle and pitch circle of a gear wheel or rack — compare addendum |