Webster's Revised Unabridged Dictionary · 1913

Unite

Unite , transitive verb

[Latin unitus, past participle of unire to unite, from unus one. See One.]

1.
To put together so as to make one; to join, as two or more constituents, to form a whole; to combine; to connect; to join; to cause to adhere; as, to unite bricks by mortar; to unite iron bars by welding; to unite two armies.
2.
Hence, to join by a legal or moral bond, as families by marriage, nations by treaty, men by opinions; to join in interest, affection, fellowship, or the like; to cause to agree; to harmonize; to associate; to attach.
Under his great vicegerent reign abide, United as one individual soul. — Milton
The king proposed nothing more than to unite his kingdom in one form of worship. — Clarendon

Unite , intransitive verb

1.
To become one; to be cemented or consolidated; to combine, as by adhesion or mixture; to coalesce; to grow together.
2.
To join in an act; to concur; to act in concert; as, all parties united in signing the petition.

Unite , adjective

[Latin unitus, p. p. See Unite, transitive verb]

United; joint; as, unite consent. [Obsolete] — J. Webster