1. Anatomy. an area of skin that is supplied with the nerve fibers of a single, posterior, spinal root.
  2. Surgery. a mechanical instrument for cutting thin sections of skin for grafting.
  3. Embryology. the part of a mesodermal somite contributing to the development of the dermis.

Origin of dermatome

First recorded in 1925–30; derma1 + -tome
Related formsder·ma·tom·ic [dur-muh-tom-ik] /ˌdɜr məˈtɒm ɪk/, der·ma·to·mal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for dermatomal


  1. a surgical instrument for cutting thin slices of skin, esp for grafting
  2. the area of skin supplied by nerve fibres from a single posterior spinal root
  3. embryol the part of a somite in a vertebrate embryo that gives rise to the dermis
Derived Formsdermatomic (ˌdɜːməˈtɒmɪk), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

dermatomal in Medicine


  1. An area of skin innervated by sensory fibers from a single spinal nerve.
  2. An instrument used in cutting thin slices of the skin, as for skin grafts.
  3. The part of a mesodermal somite from which the dermis develops.cutis plate
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.