from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The outer, protective, nonvascular layer of the skin of vertebrates, covering the dermis.
- n. An integument or outer layer of various invertebrates.
- n. The outermost layer of cells covering the leaves and young parts of a plant.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The outer, protective layer of the skin of vertebrates, covering the dermis
- n. The similar outer layer of cells in invertebrates and plants
from the GNU version of the Collaborative International Dictionary of English
- n. The outer, nonsensitive layer of the skin; cuticle; scarfskin. See dermis.
- n. The outermost layer of the cells, which covers both surfaces of leaves, and also the surface of stems, when they are first formed. As stems grow old this layer is lost, and never replaced.
from The Century Dictionary and Cyclopedia
- n. In anatomy, the cuticle or scarfskin; the non-vascular outer layer of the skin.
- n. In zoology, broadly, some or any outermost integument or tegumentary covering or envelop of the body, or some part of the body: a term nearly synonymous with exoskeleton.
- n. In embryology, the outermost blastodermic membrane; the ectoderm or epiblast, which will in due course become an epidermis proper.
- n. In conchology, specifically, the rind or peel covering the shell of a mollusk; the external animal integument of the shell, as distinguished from the shell-substance proper: commonly found as a tough, fibrous, or stringy dark-colored bark, which readily peels off in shreds.
- n. In botany, the outer layer or layers of cells covering the surfaces of plants.
- n. Also epiderm.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the outer layer of the skin covering the exterior body surface of vertebrates
Late Latin, from Greek : epi-, epi- + derma, skin; see der- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin epidermis, from Ancient Greek ἐπιδερμίς (epidermis) (ἐπί, on top of) + dermis (< δέρμα(derma), skin) (Wiktionary)