DEFINITION of 'Market Discount'. The difference between a bond's stated redemption price and its purchase price on the secondary market, if it has been purchased at a price below par. Market discount arises when a bond's value on the secondary market decreases after it has been issued, usually because of an increase in interest rates.
A chalazion is a small bump in the eyelid caused by a blockage of a tiny oil gland. A chalazion is caused by a blocked duct in one of the meibomian glands. These glands are located in the eyelid directly behind the eyelashes. They produce a thin, oily fluid that lubricates the eye.
1 A chalazionis a lump in the upper or lower eyelid caused by obstruction and inflammation of an oil gland of the eyelid. 2  A chalazion is not a tumor or growth and does not cause permanent changes in the vision. 3  A chalazion is very common and usually goes away without the necessity of surgery.yelid glands are called the meibomian glands. They are also known as the palpebral glands, tarsal glands, or tarsoconjunctival glands. There are 30 to 40 of these glands in each of the upper and lower lids. These glands produce a thick liquid secretion that is discharged into the tear film of the eye.