1. the quality or state of having a grainy texture; the presence of visible grains or particles
Usage: commonly used in photography and image quality contexts
2. in photography and digital imaging, the visible noise or speckled appearance caused by individual pixels or film grain
Usage: technical term in photography and image processing

Examples

• The graininess of the old photograph gave it a vintage charm.
• High ISO settings on the camera increased the graininess of the image.
• The graininess of the wood made it feel rough to the touch.
• Professional photographers often reduce graininess during post-processing.
• The graininess in the low-light photo was unavoidable without better equipment.
• Salt has a fine graininess that makes it easy to sprinkle.