Opaque meaning: Opaque means not allowing

Opaque means not allowing light to pass through, or not clear or transparent. It can also refer to glass, costume, or a mineral. Learn more about its origin, pronunciation, and related words. Compare transparent, translucent & opaque with definitions & examples. Chart comparing translucent vs transparent included for quick & easy reference. Opaque definition : not transparent or translucent; impenetrable to light; not allowing light to pass through.. See examples of OPAQUE used in a sentence. Opaque means preventing light from travelling through, and therefore not transparent or translucent. It also means difficult to understand or know about, especially because things have been intentionally kept secret or made complicated.