COULOMB'S LAW
Cou`lomb's" law. (Physics)

Defn: The law that the force exerted between two electric or magnetic charges is directly proportional to the product of the charges and inversely to the square of the distance between them.

COULTER
Coul"ter (kl"tr), n.

Defn: Same as Colter.

COULTERNEB
Coul"ter*neb` (-nb`), n. (Zoöl.)

Defn: The puffin.

COULURE
Cou*lure", n. [F., prop., a dropping.] (Hort.)

Defn: A disease affecting grapes, esp. in California, manifested by the premature dropping of the fruit.

COUMARIC
Cou*mar"ic (k-mr"k), a.

Defn: Relating to, derived from, or like, the Dipterix odorata, a tree of Guiana. Coumaric acid (Chem.), one of a series of aromatic acids, related to cinnamic acid, the most important of which is a white crystalline substance, HO.C6H4.C2H2.CO2H, obtained from the tonka bean, sweet clover, etc., and also produced artifically.