spray-on adjective 1noun 1forms 1 adjective1 •Having been applied to a surface by spraying. noun1 •Any substance that is applied to a surface by spraying.This isn’t the first benzene-related recall of 2021. In July, Johnson & Johnson recalled some spray-on Neutrogena and Aveeno sunscreens after it detected low levels of the carcinogen in the products. — 2021 formsspray-ons