Chronotron

[ kron-uh-tron, kroh-nuh- ]
/ ˈkrɒn əˌtrɒn, ˈkroʊ nə- /

Trademark.

a brand name for a device for measuring extremely brief time intervals by comparing electric pulses.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019