DiadromDi"a*drom\, n. [Gr. ? a running through; dia` through + ?, used as inf. aor. of ? to run.] A complete course or vibration; time of vibration, as of a pendulum. [Obs.] --Locke.
|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|a chattering or flighty, light-headed person.|