The Collaborative International Dictionary of English v.0.48:

Intermediate \In`ter*me"di*ate\, a. [Pref. inter- + mediate: cf.
   F. interm['e]diat.]
   1. Lying or being in the middle place or degree, or between
      two extremes; coming or done between; intervening;
      interposed; interjacent; as, an intermediate space or
      time; intermediate colors.
      [1913 Webster]

   2. Hence: Of or pertaining to an intermediate school; as,
      intermediate education.
      [PJC]

   Intermediate state (Theol.), the state or condition of the
      soul between the death and the resurrection of the body.


   Intermediate terms (Math.), the terms of a progression or
      series between the first and the last (which are called
      the extremes); the means.

   Intermediate tie. (Arch.) Same as Intertie.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Intermediate \In`ter*me"di*ate\, v. i.
   To come between; to intervene; to interpose. --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Intermediate \In`ter*me"di*ate\, n.
   1. A person who intermediates between others, especially in
      negotiations; an intermediary; a mediator.
      [PJC]

   2. Something that is intermediate.
      [PJC]

   3. Specifically: (Chem.) A compound which is produced in the
      course of a chemical synthesis, which is not itself the
      final product, but is used in further reactions which
      produce the final product; also called synthetic
      intermediate, intermediate compound or intermediate
      product; -- contrasted to starting material and end
      product or final product. There may be many different
      intermediates between the starting material and end
      product in the course of a complex synthesis; as, many
      industrial chemicals are produced primarily to be used as
      intermediates in other syntheses.

   Note: The term has the same meaning with respect to
         intermediate compounds produced in a biosynthetic
         pathway in living organisms.
         [PJC]

WordNet (r) 3.0 (2006):

intermediate
    adj 1: lying between two extremes in time or space or state;
           "going from sitting to standing without intermediate
           pushes with the hands"; "intermediate stages in a
           process"; "intermediate stops on the route"; "an
           intermediate range plane" [ant: terminal]
    2: around the middle of a scale of evaluation; "an orange of
       average size"; "intermediate capacity"; "medium bombers"
       [syn: average, intermediate, medium]
    n 1: a substance formed during a chemical process before the
         desired product is obtained
    v 1: act between parties with a view to reconciling differences;
         "He interceded in the family dispute"; "He mediated a
         settlement" [syn: intercede, mediate, intermediate,
         liaise, arbitrate]

Moby Thesaurus II by Grady Ward, 1.0:

158 Moby Thesaurus words for "intermediate":
   Charlie McCarthy, Hydromatic, act between, agent, amidships,
   ancilla, appliance, arbitrate, arbitrational, arbitrative,
   arbitrator, automatic transmission, average, banal, bargain,
   broker, center, central, cogwheel, coming between, common,
   connection, contact, contrivance, core, creature, deputy, device,
   differential, differential gear, dummy, dupe, entrepreneur,
   equatorial, equidistant, fair, fairish, freewheel, front,
   front man, gear, gear train, gearbox, gearing, gearshift,
   gearwheel, go between, go-between, going between, halfway,
   handmaid, handmaiden, high, implement, indifferent, instrument,
   interagent, intercede, interceder, intercessional, intercessor,
   intercessory, intercurrent, interfere, interior, interjacent,
   interlocutory, intermedial, intermediary, intermediate agent,
   intermediator, intermediatory, intermedium, internuncio,
   interpleader, interpose, intervene, intervener, intervenient,
   intervening, interventional, interventionist, interventor, judge,
   lever, low, make terms, mean, mechanism, medial, median, mediate,
   mediating, mediative, mediator, mediatorial, mediatory, mediocre,
   mediterranean, medium, meet halfway, mesial, mesne, mezzo, mid,
   middle, middle-of-the-road, middleman, middlemost, middling,
   midland, midmost, midships, midway, midwife, minion, moderate,
   mouthpiece, negotiant, negotiate, negotiator, negotiatress,
   negotiatrix, neutral, normal, nuclear, ombudsman, ordinary, organ,
   overdrive, pacificatory, pawn, plaything, puppet, rack, referee,
   represent, reverse, routine, servant, slave, so-so, spokesman,
   spokeswoman, standard, standard transmission, step in, stick shift,
   stooge, synchromesh, tool, toy, transitional, transmission,
   treat with, umpire, usual, vehicle