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.
It can develop on the lower or upper eyelid, and it often disappears without treatment in about one month. However, you should see a doctor if you think you might have a chalazion, especially if it is large enough to block your vision. In rare cases, chalazia are caused by skin cancer. A chalazion is similar to a stye (an enflamed oil gland on the eyelid), but is usually smaller and less painful.