MITOCHONDRION

[mi.to.chon.dri.on] n, pl -dria [NL, fr. Gk mitos thread + chondrion, dim. of chondros grain] (1901): any of various round or long cellular organelles of most eukaryotes that are found outside the nucleus, produce energy for the cell through cellular respiration, and are rich in fats, proteins, and enzymes--see cell illustration -- mi.to.chon.dri.al adj