endoscope

en·do·scope

noun \ˈen-də-ˌskōp\

Definition of ENDOSCOPE

: an illuminated usually fiber-optic flexible or rigid tubular instrument for visualizing the interior of a hollow organ or part (as the bladder or esophagus) for diagnostic or therapeutic purposes that typically has one or more channels to enable passage of instruments (as forceps or scissors)

—en·dos·co·py \en-ˈdäs-kə-pē\ noun, plural en·dos·co·pies