Source : Webster's Revised Unabridged Dictionary (1913)

Proposal \Pro*pos"al\, n. [From {Propose}.]
   1. That which is proposed, or propounded for consideration or
      acceptance; a scheme or design; terms or conditions
      proposed; offer; as, to make proposals for a treaty of
      peace; to offer proposals for erecting a building; to make
      proposals of marriage. ``To put forth proposals for a
      book.'' --Macaulay.

   2. (Law) The offer by a party of what he has in view as to an
      intended business transaction, which, with acceptance,
      constitutes a contract.

   Syn: Proffer; tender; overture. See {Proposition}.

Source : WordNet®

proposal
     n 1: something proposed (such as a plan or assumption)
     2: an offer of marriage [syn: {marriage proposal}, {proposal of
        marriage}, {marriage offer}]
     3: the act of making a proposal; "they listened to her
        proposal" [syn: {proposition}]