clear; distinct; easy to perceive or understand. Used especially for sounds, visual images, or logical structures

clear, distinct, well-defined, or lucid

degree of clarity or sharpness; definition; articulation

standard-definition video or image resolution quality, often referring to 480i or 576i formats

high definition or high resolution, especially when referring to display instruments or digital media

high-definition television; a television system that provides a significantly higher resolution than traditional formats through digital transmission and progressive scanning