Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The cytoplasmic membrane that surrounds a vacuole of a plant cell.
from The Century Dictionary.
- noun Ono of the vacuoles of the plant-cell, having a distinct wall and dividing like a true cellular organ, such as a chromosome, chromatophore, etc. Went (1888).
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun biology The
cytoplasmic membrane surrounding avacuole , separating the vacuolar contents from thecell 'scytoplasm .
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[Greek tonos, string, tension; see ten- in Indo-European roots + –plast.]
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Examples
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Most cells can have small cell wall cell membrane vacuoles that are formed as required, but plant cells usually have one cytoplasm tonoplast very large permanent vacuole that fills most of the cell, so that the membrane permanent cytoplasm (and everything else) forms a thin layer round the outside. valuole nucleus Plant cell vacuoles are filled with cell sap, and are very important in keeping the cell rigid, or turgid.
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