detectograph
English edit
Etymology edit
From detect + -o- + -graph. Possibly originally a trademark.
Noun edit
detectograph (plural detectographs)
- An early audio recording device used in wiretaps.
- 1914, United States Congress, Congressional edition:
- There were no stenographers and no detectographs in those days, and there is no record of this interview, fraught with such tremendous benefit to Germany and all Europe […]
- 1915, Journal of the Engineers' Society of Pennsylvania, volume 7:
- […] it is taken for granted that the discussions are not significant, otherwise we might consider the advisability of capturing these golden words by the installation of detectographs throughout the club house.