What is the definition or description of: hordeolum?

Stye: This is an inflammation of a gland in the lid, analogous to a pimple, in which stagnated secretion becomes infected and sets up a focal inflammation. It is a fancy term for what most commonly call a stye.

Stye: This is the medical term for a stye or stopped up oil gland on the edge of the eyelid.

Clogged oil gland: A hordeolum (often referred to as a stye) is when an oil gland (mebomian gland) of the eyelid margin becomes clogged. The oil backs up and forms a nodule and inflammation. An internal hordeolum is when the nodule protrudes on the anterior surface of the eyelid and a internal is when it protrudes on the back surface of the eyelid.