Free Carrier. In international commerce, an agreement between a seller and a buyer indicating that the seller has fulfilled his/her obligation to deliver a good when he/she has transferred it to the port, airport, or other place from which it will be transported.
Definition of UNIT FRACTION. : a fraction whose numerator is unity and whose denominator is an integer.
A unitary element is a generalization of a unitary operator. In a unital *-algebra, an element U of the algebra is called a unitary element if U*U = UU* = I, where I is the identity element.