A coupon found on the Internet. / A coupon that can be redeemed on a web site for savings on a product or service.

(retail) An alphanumeric code used to identify the offer associated with a coupon.

simple past tense and past participle of couple

(chemistry) Any of a class of reactions in which an organic halide reacts with an organometallic zinc compound under the control of a catalyst; R-X + R'-Zn-X' => R-R'

In set dances with more than one couple dancing, the couple doing the more complicated movement during any given portion of the dance. The role of active couple may pass from one couple to another. In many quadrilles, certain figures will have two active couples at any one time; in long set dances, quite often every other couple or every third couple is the active couple.

plural of couplet

plural of active couple

Two people who are married to each other.

(transitive) To put into a couple; to put into, or connect together as, a group of two. / (intransitive) To get into pairs; to become a group of two.

The corrosive cell formed when two different metals are separated by an electrolyte, or the corrosion produced by this effect.