orderer

from WordNet (r) 3.0 (2006)

orderer
    n 1: someone who places an order to buy
    2: an organizer who puts things in order; "Aristotle was a great
       orderer of ideas" [syn: {orderer}, {systematizer},
       {systematiser}, {systemizer}, {systemiser}, {systematist}]

from The Collaborative International Dictionary of English v.0.48

Orderer \Or"der*er\, n.
   1. One who puts in order, arranges, methodizes, or regulates.
      [1913 Webster]

   2. One who gives orders.
      [1913 Webster]

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