Dictionary

tonoplast

noun to·no·plast \ˈtō-nə-ˌplast\

Definition of TONOPLAST

:  a semipermeable membrane surrounding a vacuole in a plant cell

Origin of TONOPLAST

International Scientific Vocabulary tono- (from Greek tonos tension) + -plast — more at tone
First Known Use: circa 1888

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to base (something) on something else
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