Definition of "oscillograph" [oscillograph•os•cil•lo•graph]

• A device that records oscillations, as of an electric current and voltage. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Cambridge who devised the convenient moving-iron oscillograph which is now in common use; to all these my own work is deeply indebted."
• "Turner grabbed for an aluminum-encased oscillograph."
• "Back in the lab, we fished up from the hole the muscle's pointy end and tied it to an oscillograph whose pen-arm moved at first in even sweeps."