sebum Sebright • sebundy · · · Info · Definitions · Characters · · sebum · · Text Latin · · Script 5 · · Length Definitions · · · (noun) the oily secretion of the sebaceous glands; with perspiration it moistens and protects the skin. · · Noun Definition 1 Characters · · b latin small letter b U+0062 e latin small letter e U+0065 m latin small letter m U+006D s latin small letter s U+0073 u latin small letter u U+0075