Definition: Adjective: (1) relating to or derived from human vision e.g. visual cortex is part of brain devoted to visual perception. (2) ~ aid: graphic, design or other illustration used to guide, educate, inform etc. e.g. LCD screens on cameras are visual aids to controlling cameras. Noun: (3) Rough or preliminary lay-out or sketch used as guide for final art-work or as aid to discussion, concept evolution, etc.

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