What is Conjunctive?

Legal Definition
Contracts, wills, instruments. A term in grammar used to designate particles which connect one word to another, or one proposition to another proposition.

2. There are many cases in law, where the conjunctive and is used for the disjunctive or, and vice versa.

3. An obligation is conjunctive when it contains several things united by a conjunction to indicate that they are all equally the object of the matter or contract for example, if I promise for a lawful consideration, to deliver to you my copy of the Life of Washington, my Encyclopaedia, and my copy of the History of the United States, I am then bound to deliver all of them and cannot be discharged by delivering one only. There are, according to Toullier, tom. vi. n. 686, as many separate obligations Is there are things to be delivered, and the obligor may discharge himself pro tanto by delivering either of them, or in case of refusal the tender will be valid. It is presumed, however, that only one action could be maintained for the whole. But if the articles in the agreement had not been enumerated; I could not, according to Toullier, deliver one in discharge of my contract, without the consent of the creditor; as if, instead of enumerating the, books above mentioned, I had bound myself to deliver all my books, the very books in question. Vide Disjunctive, Item, and the case, there cited; and also, Bac. Ab. Conditious, P; 1 Bos. & Pull. 242; 4 Bing. N. C. 463 S. C. 33 E. C. L. R. 413; 1 Bouv. Inst. n. 687-8.
-- Bouviers Law Dictionary
Legal Definition
A grammatical term for particles which serve for joining or connecting together. Thus, the conjunction "and" is called a "conjunctive," and "or" a "disjunctive," conjunction.
-- Black's Law Dictionary
Legal Definition
Together; jointly.
-- Ballentine's Law Dictionary