Opacity - Wikipedia Opacity is the measure of impenetrability to electromagnetic or other kinds of radiation, especially visible light In radiative transfer, it describes the absorption and scattering of radiation in a medium, such as a plasma, dielectric, shielding material, glass, etc
CSS opacity property - W3Schools The opacity property sets the opacity level for an element The opacity-level describes the transparency-level, where 1 is not transparent at all, 0 5 is 50% see-through, and 0 is completely transparent
Opacity - definition of opacity by The Free Dictionary Define opacity opacity synonyms, opacity pronunciation, opacity translation, English dictionary definition of opacity n pl o·pac·i·ties 1 The quality or state of being opaque 2 Something opaque 3 a Obscurity; impenetrability b Dullness of mind American Heritage®
opacity - CSS | MDN The opacity CSS property sets the opacity of an element Opacity is the degree to which content behind an element is hidden, and is the opposite of transparency