pro·​to·​plast | \ ˈprō-tə-ˌplast How to pronounce protoplast (audio) \

Definition of protoplast

1 : one that is formed first : prototype
2 : a plant cell that has had its cell wall removed also : the nucleus, cytoplasm, and plasma membrane of a cell as distinguished from inert walls and inclusions

Examples of protoplast in a Sentence

Recent Examples on the Web Moisturize with Shiseido Waso Clear Mega-Hydrating Cream, made with whole carrot protoplasts (what's left of the cell when its wall dissolves). Maya Mcdowell, Seventeen, "These Superfood-Inspired Beauty Products Are a *Must* for Your Most Annoying Skin Issues," 21 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'protoplast.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of protoplast

1532, in the meaning defined at sense 1

History and Etymology for protoplast

Middle French protoplaste, from Late Latin protoplastus first human, from Greek prōtoplastos first formed, from prōt- prot- + plastos formed, from plassein to mold — more at plaster

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Time Traveler for protoplast

Time Traveler

The first known use of protoplast was in 1532

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Cite this Entry

“Protoplast.” Dictionary, Merriam-Webster, Accessed 20 Jan. 2021.

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More Definitions for protoplast


pro·​to·​plast | \ ˈprōt-ə-ˌplast How to pronounce protoplast (audio) \

Medical Definition of protoplast

: the nucleus, cytoplasm, and plasma membrane of a cell as distinguished from inert walls and inclusions

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