An Etymological Dictionary of Astronomy and Astrophysics

A network of fluid-filled spaces in the body’s connective tissues all over the body. It lies below the skin’s surface and surrounds arteries, muscles, and the digestive and urinary tracts in a layer long thought to be dense connective tissue. Interstitium could be the largest organ in the human body

Etymology (EN): From L. interstitium, → interstice.

Etymology (PE): Andarjâyân, from andarjâ, → interstice,

• euphonic sound -y-, + relation suffix -ân.