revenue bond: a bond issued by an agency that is commissioned to finance public works; revenue from the public property is used to pay off the bond
security: a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends
oxygen: a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust