Di'a-drōm, n.

n. [Gr. διάδρομος and διαδρομή, a running through, from διαδραμεῖν, διατρέχειν, to run through, from διά, through, and τρέχειν, inf. aor. δραμεῖν, to run.] A complete course or vibration; time of vibration, as of a pendulum. [Obs.] Locke.