laryngostroboscope

la·ryn·go·stro·bo·scope

(lă-ring'gō-strō'bō-skōp, -strob'ō-skōp),
Apparatus for observing the motion of the vocal folds during phonation with intermittent illumination. As the frequency of illumination approaches the frequency of opening and closing of the vocal cords, they appear to be still.
Farlex Partner Medical Dictionary © Farlex 2012

laryngostroboscope

(lăr″ĭn-gō-strō′bō-skōp) [″ + strobos, whirl, + skopein, to view]
An instrument for inspecting vibration of the vocal cords.
Medical Dictionary, © 2009 Farlex and Partners