Age-related macular degeneration (AMD or ARMD) is the most common cause of vision loss in those aged over 50. It causes a gradual loss of central (but not peripheral) vision. Central vision is needed for detailed work and for things like reading and driving. The disease does not lead to complete blindness.
Definition of Dissonance Dissonance is the use of impolite, harsh-sounding, and unusual words in poetry. In other words, it is a deliberate use of inharmonious words, phrases, or syllables intended to create harsh sounding effects.
adjective. The definition of dissonant is things that don't go well together or things that are not harmonious. The sound that occurs when you play two cords on the piano that don't sound good together is an example of something that would be described as dissonant.he sound that occurs when you play two cords on the piano that don't sound good together is an example of something that would be described as dissonant.