The meaning of INVISIBLE is incapable by nature of being seen : not perceptible by vision. How to use invisible in a sentence. Invisible has trained >80% of the world's leading AI models with our modular system that transforms data and manual processes into agent-ready workflows. INVISIBLE definition: not visible; not perceptible by the eye. See examples of invisible used in a sentence. impossible to see: 2. ignored, not noticed, or not considered: 3. used to refer to money that…. Definition of invisible adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. invisible synonyms, invisible pronunciation, invisible translation, English dictionary definition of invisible. Impossible to see; not visible: Air is invisible. Not accessible to view; … Apr 11, 2026 · invisible (third-person singular simple present invisibles, present participle invisibling, simple past and past participle invisibled) To make invisible, to invisiblize. not visible; not able to be perceived by the eye 2. concealed from sight; hidden 3.