[vis.i.ble] adj [ME, fr. MF or L; MF, fr. L visibilis, fr. visus, pp. of videre to see] (14c) 1 a: capable of being seen "stars ~ to the naked eye" b: situated in the region of the electromagnetic spectrum perceptible to human vision "~ light"--used of radiation having a wavelength between about 400 nanometers and 700 nanometers
2. a: exposed to view "the ~ horizon" b: conspicuous
3: capable of being discovered or perceived: recognizable "no ~ means of support"
4: accessible 4
5: devised to keep a particular part or item always in full view or readily seen or referred to "a ~ index" -- vis.i.ble.ness n -- vis.i.bly adv