A paint defect where the paint film crawls back and leaves bare patches on the surface, usually caused by contamination or poor surface preparation.
From 'ciss,' a variant of 'cyst' or possibly from the verb 'to ciss' meaning to contract or shrink. This technical term emerged in the painting and coating industry in the 20th century.
Professional painters know 'cissing' well—one tiny bit of grease or dust on your surface and the paint literally runs away like it's scared, creating a scientific demonstration of hydrophobic surfaces right on your wall.
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