residual body

noun

Medical Definition of residual body 

1 : a cytoplasmic vacuole containing the leftover products of digestion after fusion with the contents of a lysosome

2 : any of the small cytoplasmic masses that are shed from the developing sperms in spermiogenesis and that lack a nucleus but contain lipids, ribosomes, mitochondria, and cytoplasmic membranes

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