dictograph - Wiktionary, the free dictionary
WEBSep 3, 2022 · dictograph (plural dictographs) ( historical) A telephonic instrument for office or similar use, having a sound - magnifying device enabling the ordinary mouthpiece to be dispensed with. It was sometimes used for covertly recording conversations.
dictagraph - Wiktionary, the free dictionary
WEBOct 10, 2019 · Noun [ edit] dictagraph (plural dictagraphs) Alternative form of dictograph. Categories: English lemmas.
Dictograph Definition & Meaning - Merriam-Webster
WEBThe meaning of DICTOGRAPH is a telephonic instrument for picking up sounds in one room and transmitting them to another or recording them —formerly a U.S. …
Covert listening device - Wikipedia
WEBDictograph. Among the earliest covert listening devices used in the United States of America was the dictograph, an invention of Kelley M. Turner patented in 1906 (US Patent US843186A). It consisted of a microphone in one location and a remote listening post with a speaker that could also be recorded using a phonograph.
dictograph, n. meanings, etymology and more - Oxford English …
WEBOED's earliest evidence for dictograph is from 1907, in a text by K. M. Turner and W. Donnan. dictograph is formed within English, by compounding. Etymons: dictation n. , ‑o‑ connective , ‑graph comb. form .
DICTOGRAPH Definition & Meaning | Dictionary.com
WEBDictograph definition: a brand name for a telephonic device with a highly sensitive transmitter obviating the necessity of a mouthpiece. See examples of DICTOGRAPH used in a sentence.
DICTOGRAPH definition and meaning | Collins English Dictionary
WEBnoun. trademark. a telephonic instrument for secretly monitoring or recording conversations by means of a small, sensitive, and often concealed microphone. Collins English Dictionary. Copyright © HarperCollins Publishers. Dictograph in American English. (ˈdɪktəˌgræf ) US. …
Dictograph - definition of Dictograph by The Free Dictionary
WEBDefine Dictograph. Dictograph synonyms, Dictograph pronunciation, Dictograph translation, English dictionary definition of Dictograph. n trademark a telephonic instrument for secretly monitoring or recording conversations by means of a small, sensitive, and often concealed microphone...
WEBDictograph ultimately became one of the earliest electric eavesdropping devices, used by both police and private investigators. As such, the Dictograph played a part in some notable criminal prosecutions and was used in antiunion activity. It continued to be used in this way until it was rendered obsolescent by other technologies.
DICTOGRAPH Definition & Usage Examples | Dictionary.com
WEBDictograph definition: a brand name for a telephonic device with a highly sensitive transmitter obviating the necessity of a mouthpiece. See examples of DICTOGRAPH used in a sentence.
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