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.
Chalazion is also known as a meibomian gland lipogranuloma. A chalazion cyst can take months to heal fully with treatment and could often take years to heal without any major problems. The tiny gland which is involved in the creation of a chalazion is an altered oil gland which lies within the eyelid. There are normally about 40 of these type glands within each of lower as well as upper lids. These glands are ones that discharge oil into the tears.