syntonize

Century Dictionary and Cyclopedia

1. To adjust to syntonism; render syntonic. See syntonism.

Wiktionary

1. v. electronics To adjust two electronic circuits or devices to operate on the same frequency.

GNU Webster's 1913

1. v. (Physics) To adjust or devise so as to emit or respond to electric oscillations of a certain wave length; to tune; specif., to put (two or more instruments or systems of wireless telegraphy) in syntony with each other.