Definition of "protoplast" []

• Biology The living material of a plant or bacterial cell, including the protoplasm and plasma membrane after the cell wall has been removed. (noun)
• One that is the first made or formed; a prototype. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The death has occurred of Adam, protoplast, progenitor, park-keeper and agriculturalist."
• "In sum, technologies such as tissue culture, anther culture, embryo rescue, protoplast fusion, and genetic markers are likely to bring undreamed of breakthroughs that will transform Africa's native grains."
• "Several teams have managed to regenerate fertile rice plants from protoplast-cells from which the wall has been removed."