protoderm

American  

[proh-tuh-durm] / ˈproʊ təˌdɜrm /

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.

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protoderm Scientific  

/ prō′tə-dûrm′ /

1. The primary meristem in vascular plants that gives rise to epidermis.

2. Also called dermatogen

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Etymology

Origin of protoderm

First recorded in 1930–35; proto- + -derm

Example Sentences

Apical meristems differentiate into the three basic types of meristem tissue which correspond to the three types of tissue: protoderm produces new epidermis, ground meristem produces ground tissue, and procambium produces new xylem and phloem.

From Textbooks • Jan. 1, 2015