The Collaborative International Dictionary of English v.0.48:

Command \Com*mand"\ (?; 61), v. t. [imp. & p. p. Commanded; p.
   pr. & vb. n. Commanding.] [OE. comaunden, commanden, OF.
   comander, F. commander, fr. L. com- + mandare to commit to,
   to command. Cf. Commend, Mandate.]
   1. To order with authority; to lay injunction upon; to
      direct; to bid; to charge.
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            We are commanded to forgive our enemies, but you
            never read that we are commanded to forgive our
            friends.                              --Bacon.
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            Go to your mistress:
            Say, I command her come to me.        --Shak.
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   2. To exercise direct authority over; to have control of; to
      have at one's disposal; to lead.
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            Monmouth commanded the English auxiliaries.
                                                  --Macaulay.
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            Such aid as I can spare you shall command. --Shak.
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   3. To have within a sphere of control, influence, access, or
      vision; to dominate by position; to guard; to overlook.
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            Bridges commanded by a fortified house. --Motley.
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            Up to the eastern tower,
            Whose height commands as subject all the vale.
                                                  --Shak.
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            One side commands a view of the finest garden.
                                                  --Addison.
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   4. To have power or influence of the nature of authority
      over; to obtain as if by ordering; to receive as a due; to
      challenge; to claim; as, justice commands the respect and
      affections of the people; the best goods command the best
      price.
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            'Tis not in mortals to command success. --Addison.
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   5. To direct to come; to bestow. [Obs.]
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            I will command my blessing upon you.  --Lev. xxv.
                                                  21.

   Syn: To bid; order; direct; dictate; charge; govern; rule;
        overlook.
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The Collaborative International Dictionary of English v.0.48:

Commanding \Com*mand"ing\, a.
   1. Exercising authority; actually in command; as, a
      commanding officer.
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   2. Fitted to impress or control; as, a commanding look or
      presence.
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   3. Exalted; overlooking; having superior strategic
      advantages; as, a commanding position.

   Syn: Authoritative; imperative; imperious.
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WordNet (r) 3.0 (2006):

commanding
    adj 1: used of a height or viewpoint; "a commanding view of the
           ocean"; "looked up at the castle dominating the
           countryside"; "the balcony overlooking the ballroom"
           [syn: commanding, dominating, overlooking]

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "commanding":
   absolute, ascendant, at the head, authoritarian, authoritative,
   authorized, autocratic, boss, chief, clothed with authority,
   compelling, competent, consequential, considerable, controlling,
   decretal, decretive, decretory, dictating, directing, directive,
   directorial, directory, dominant, duly constituted, eminent,
   empowered, ex officio, general, governing, great, guiding, head,
   hegemonic, hegemonistic, imperative, important, in ascendancy,
   in charge, in chief, in the ascendant, influential, instructive,
   jussive, leading, managerial, managing, mandating, master, mighty,
   momentous, monocratic, obligating, official, paramount, peremptory,
   potent, powerful, preceptive, predominant, predominate, preeminent,
   prepollent, preponderant, preponderate, prepotent, prescriptive,
   prestigious, prevalent, prominent, puissant, ranking, regnant,
   regulating, regulative, regulatory, reigning, ruling, senior,
   sovereign, substantial, superior, supreme, totalitarian, weighty