Definition of protoplast in English:


Syllabification: pro·to·plast
Pronunciation: /ˈprōtəˌplast


chiefly Botany
The protoplasm of a living plant or bacterial cell whose cell wall has been removed.
More example sentences
  • In this plasmolysed cell the protoplast has suffered very intense shrinkage.
  • Fibres are often described as cells having no living protoplasts at maturity.
  • The hydrostatic pressure model proposes that statocytes detect the total weight exerted by the protoplast on its cell wall.


late 19th century: from Greek prōtoplastos 'first formed', from prōtos 'first' + plassein 'to mold'.



Pronunciation: /ˌprōtəˈplastik/
More example sentences
  • In principle, the cell-to-cell (‘protoplastic’) component would have to be split into a symplastic and a transcellular component.
  • It has been well recognized that protoplastic sources centred upon mitochondrial, chloroplastic or peroxisomal generating systems exist, but have mainly been studied in relation to abiotic stresses.
  • To the various forms of mutation breeding, add in such techniques as protoplastic cell fusion, embryo rescue, meristem tip culture and other forms of tissue culture or somoclonal variation.

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