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noun Botany.
  1. a thin outer layer of the meristem in embryos and growing points of roots and stems, which gives rise to the epidermis.

Origin of protoderm

First recorded in 1930–35; proto- + -derm
Also called dermatogen.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
protoderm in Science


  1. The primary meristem in vascular plants that gives rise to epidermis. Also called dermatogen
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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