MDNA: Madonna + DNA.
MDNA: Mitochondrial DNA can be regarded as the smallest chromosome, and was the first significant part of the human genome to be sequenced. In most species, including humans, mDNA is inherited solely from the mother.
MDMA: an entactogenic drug of the phenethylamine and amphetamine class of drugs, widely known as ecstasy.
Stars I met Madonna Cyndi Lauper Grace Jones Nelly Furtado P!nk Sky Ferreira Marina & The Diamonds Rosie ODonnell Ariana Grande Iggy Azalea et al