tonoplast

noun
to·​no·​plast | \ˈtō-nə-ˌplast \

Definition of tonoplast 

: a semipermeable membrane surrounding a vacuole in a plant cell

First Known Use of tonoplast

circa 1888, in the meaning defined above

History and Etymology for tonoplast

International Scientific Vocabulary tono- (from Greek tonos tension) + -plast — more at tone entry 1

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The first known use of tonoplast was circa 1888

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