mitochondrion

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mi·to·chon·dri·on / ˌmītəˈkändrēən/ • n. (pl. -dri·a / -drēə/ ) Biol. an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers (cristae).DERIVATIVES: mi·to·chon·dri·al / -drēəl/ adj.

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