Today's word is:
isochronal
pronounced either: eye-SAH-kruh-nuhl, or eye-suh-KRO-nuhl
The word is an adjective that means equal in time, or occurring at regular intervals.
From the Greek iso- (equal) + chronos (time). Earliest documented use: 1680.
I like this word, but seems like the word "periodic" has taken over and is used whenever either word works.