Tonoplast

Definition

noun, plural: tonoplasts

The cytoplasmic membrane surrounding the vacuole, separating the vacuolar contents from the cytoplasm in a cell.


Supplement

As a membrane, it is mainly involved in regulating the movements of ions around the cell, and isolating materials that might be harmful or a threat to the cell.


Word origin: Gk tón(os) + -o-, meaning “stretching,” “tension,” “tone” + comb. form repr. Gk plastós formed, molded.

"Also called: vacuolar membrane.
See also: vacuole.

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