You searched for: “sphygmophone”
sphygmophone (s) (noun), sphygmophones (pl)
An instrument produces pulsations that are rendered audible.
This entry is located in the following units: phon-, phono-, -phone, -phonia, -phonic, -phonetic, -phonous, -phonically, -phonetically, -phony + (page 18) sphygmo-, sphygm-, -sphyxia (page 2)