What is "orthodromic"

Orthodromic \Or`tho*drom"ic\, a. [Ortho- + Gr. ? to run.] Of or pertaining to orthodromy.

a. (qualifier: of neurons) Passing along neurological impulses in a normal (expected) direction.

An orthodromic impulse runs along an axon in its normal or anterograde direction, away from the soma.

In the heart, orthodromic may also refer to an impulse going in the correct direction from the dendrites to axon terminal (from the atria to the ventricles) in contrast to some impulses in re-entry.