Biology Prefixes and Suffixes: derm or dermis

Skin Cells
This image shows squamous cells from the surface of the skin. These are flat, keratinised, dead cells that are continuously sloughed off and replaced with new cells from below. Credit: SCIENCE PHOTO LIBRARY/Science Photo Library/Getty Images

Biology Prefixes and Suffixes: derm or dermis

Definition:

The affix derm comes from the Greek derma which means skin or hide. Dermis is a variant form of derm and both mean skin or covering.

Prefix (derm-)

Examples:

Derma (derm-a) - variant of dermis meaning skin.

Dermatitis (dermat-itis) - inflammation of the skin.

Dermatology (dermat-ology) - area of medicine devoted to the study of the skin and skin disorders.

Dermatome (dermat-ome) - a portion of skin containing nerve fibers from a single, posterior spinal root. It is also a surgical instrument used for obtaining thin sections of skin for grafting.

Dermatophyte (dermato-phyte) - a parasitic fungus that causes skin infections such as ringworm.

Dermatosis (dermat-osis) - any type of disease that affects the skin.

Dermis (derm-is) - the vascular inner layer of the skin.

Suffix (-derm)

Examples:

Ectoderm (ecto-derm) - outer germ layer of a developing embryo that forms skin and nervous tissue.

Endoderm (endo-derm) - inner germ layer of a developing embryo that forms the lining of the digestive and respiratory tracts.

Exoderm (exo-derm) - another name for ectoderm.

Mesoderm (meso-derm) - middle germ layer of a developing embryo that forms connective tissues such as muscle, bone and blood.

Pachyderm (pachy-derm) - large mammals with very thick skin, such as an elephant or hippopotamus.

Periderm (peri-derm) - outer protective plant tissue layer that surrounds roots and stems.

Phelloderm (phello-derm) - thin layer of plant tissue consisting of parenchyma cells that forms a secondary cortex in woody plants.

Suffix (-dermis)

Examples:

Epidermis (epi-dermis) - outermost layer of the skin composed of epithelial tissue.

Hypodermis (hypo-dermis) - innermost layer of the skin composed of fat and adipose tissue. The hypodermis insulates the body and cushions and protects internal organs.

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Bailey, Regina. "Biology Prefixes and Suffixes: derm or dermis." ThoughtCo, Oct. 28, 2015, thoughtco.com/biology-prefixes-and-suffixes-derm-or-dermis-373676. Bailey, Regina. (2015, October 28). Biology Prefixes and Suffixes: derm or dermis. Retrieved from https://www.thoughtco.com/biology-prefixes-and-suffixes-derm-or-dermis-373676 Bailey, Regina. "Biology Prefixes and Suffixes: derm or dermis." ThoughtCo. https://www.thoughtco.com/biology-prefixes-and-suffixes-derm-or-dermis-373676 (accessed November 19, 2017).