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Pneumatic device for developing a fine, small-diameter spray of paint, protective coating, or liquid colour (seeaerosol). The airbrush can be a pencil-shaped atomizer used for various highly detailed activities such as shading drawings and retouching photographs; in contrast, a spray gun is usually used for covering large surfaces with paint.
This entry comes from Encyclopædia Britannica Concise. For the full entry on airbrush, visit Britannica.com.