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2 definitions found
 for optically inactive
From The Collaborative International Dictionary of English v.0.48 :

  Inactive \In*ac"tive\, a. [Pref. in- not + active: cf. F.
     [1913 Webster]
     1. Not active; having no power to move; that does not or can
        not produce results; inert; as, matter is, of itself,
        [1913 Webster]
     2. Not disposed to action or effort; not diligent or
        industrious; not busy; idle; as, an inactive officer.
        [1913 Webster]
     3. (Chem. & Opt.) Not exhibiting any action or activity on
        polarized light; optically inactive; optically neutral;
        -- said of isomeric forms of certain substances, in
        distinction from other forms which are optically active;
        as, racemic acid is an inactive tartaric acid.
        [1913 Webster]
     4. (Chem. & Biochem.) Lacking biological or biochemical
        activity; not causing a specific biological or biochemical
        effect; -- said of substances such as enzymes which have
        lost their catalytic power, or of small molecules which
        are tested for some type of biological activity and found
        to lack that activity; as, after boiling for ten minutes,
        the enzyme was totally inactive; the methyl analog was
        inactive as an antibiotic.
     Syn: Inert; dull; sluggish; idle; indolent; slothful; lazy.
          See Inert.
          [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Optically \Op"tic*al*ly\, adv.
     1. By optics or sight.
        [1913 Webster]
     2. With reference to optics.
        [1913 Webster]
     Optically active, Optically inactive (Chem. Physics),
        terms used of certain isomeric substances which, while
        identical with each other in other respects, differ in
        this, viz., that they do or do not produce right-handed or
        left-handed circular polarization of light. See optical
     Optically positive, Optically negative. See under
        [1913 Webster]

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