- Anatomy. the outer, nonvascular, nonsensitive layer of the skin, covering the true skin or corium.
- Zoology. the outermost living layer of an animal, usually composed of one or more layers of cells.
- Botany. a thin layer of cells forming the outer integument of seed plants and ferns.
Origin of epidermis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for epidermal
Epidermal cells with sinuous thick walls, and a few tooth-hairs.Grasses
H. Marshall Ward
(g) The baleen of whales also belongs to the epidermal exoskeleton.The Vertebrate Skeleton
Sidney H. Reynolds
The crural glands, which occur in many terrestrial Arthropods, are epidermal in origin and totally distinct from the coxal glands.
The epidermal covering of snakes and lizards is periodically molted, or, as we say, the skin is shed.Elementary Zoology, Second Edition
Vernon L. Kellogg
The different species have characteristic tubes, formed by mucus secreted by epidermal glands.The Sea-beach at Ebb-tide
Augusta Foote Arnold
- Also called: cuticle the thin protective outer layer of the skin, composed of stratified epithelial tissue
- the outer layer of cells of an invertebrate
- the outer protective layer of cells of a plant, which may be thickened by a cuticle
C17: via Late Latin from Greek, from epi- + derma skin
Word Origin and History for epidermal
Online Etymology Dictionary, © 2010 Douglas Harper
- The nonvascular outer protective layer of the skin, covering the dermis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- The protective outer layer of the skin. In invertebrate animals, the epidermis is made up of a single layer of cells. In vertebrates, it is made up of many layers of cells and overlies the dermis. Hair and feathers grow from the epidermis.
- The outer layer of cells of the stems, roots, and leaves of plants. In most plants, the epidermis is a single layer of cells set close together to protect the plant from water loss, invasion by fungi, and physical damage. The epidermis that is exposed to air is covered with a protective substance called cuticle. See more at photosynthesis.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The outside layers of the skin.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.