[1] : The Collaborative International Dictionary of English v.0.48

immiscible \immis"cible\, a. pref. im- not + miscible: cf. f.
   immiscible.
   1. not capable of being mixed or mingled.
      1913 webster

            a chaos of immiscible and conflicting particles.
                                                  --cudworth.
      1913 webster

   2. specifically: chem. not miscible; forming two distinct
      phases when mixed at some concentration; -- of two
      liquids; as, water and gasoline are immiscible.
      pjc

[2] : WordNet (r) 2.0

immiscible
     adj : chemistry, physics incapable of mixing syn: unmixable
           ant: miscible
see also:
unmixable miscible 

Immiscible >> I Words
Immiscible, definition of term: Immiscible
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