Share this entry
protoplast Line breaks: proto|plast
Pronunciation: /ˈprəʊtə(ʊ)plast/

Definition of protoplast in English:


chiefly Botany
The protoplasm of a living plant or bacterial cell whose cell wall has been removed.
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 mould'.

Definition of protoplast in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources