deoxyribronucleic acid Share definition Flag The genetic material responsible for producing brohams, brotinis, and bromosapiens. It's not his fault he drinks Fratty Light and wears visors with pre-frayed brims upside down... it's his deoxyribronucleic acid. deoxyribronucleic acid by FratioFratStar April 20, 2009 Get the deoxyribronucleic acid mug.