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Bond, William Cranch

(Encyclopedia)Bond, William Cranch, 1789–1859, American astronomer, b. Portland, Maine. He early aided his father in the trades of silversmith and clockmaker in Boston. He soon became an expert in the making of c...

Bond, George Phillips

(Encyclopedia)Bond, George Phillips, 1825–65, American astronomer, b. near Boston, grad. Harvard, 1845. He became the assistant of his father, William Cranch Bond, and in 1859 succeeded him as director of the Har...

bond

(Encyclopedia)bond, in finance, usually a formal certificate of indebtedness issued in writing by governments or business corporations in return for loans. It bears interest and promises to pay a certain sum of mon...

Dodd, William

(Encyclopedia)Dodd, William, 1729–77, English author. At one time king's chaplain, he ran heavily into debt, forged a bond, and was sentenced to death. Dr. Johnson led a movement to obtain clemency, but Dodd was ...

metallic bond

(Encyclopedia)metallic bond: see chemical bond; metal. ...

ionic bond

(Encyclopedia)ionic bond: see chemical bond.

junk bond

(Encyclopedia)junk bond, a bond that involves greater than usual risk as an investment and pays a relatively high rate of interest, typically issued by a company lacking an established earnings history or having a ...

electrovalent bond

(Encyclopedia)electrovalent bond: see chemical bond. ...

covalent bond

(Encyclopedia)covalent bond kōˌvāˈlənt [key]: see chemical bond. ...

chemical bond

(Encyclopedia)chemical bond, mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the for...