With regard to biogeochemistry.

(biochemistry) An essential 22-carbon atom omega-3 fatty acid with six cis double bonds, found in fish oils, metabolized to form the docosanoids.

(US, Philippines, slang) A piece of solid or semisolid mucus in or removed from a nostril. / (US, slang) Something suggestive of this material.

(medicine) Initialism of dysfunctional uterine bleeding.