neutral red
noun Date: 1890 a basic dye used chiefly as a biological stain and acid-base indicator

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • Neutral red — IUPAC name toluylene red …   Wikipedia

  • neutral red — Used as an indicator (red at pH 6.8, yellow at 8.0), as a vital dye to stain granules and vacuoles in living cells, in testing the secretion of acid by the stomach (given with a test meal), and in general histologic staining. SYN …   Medical dictionary

  • neutral red — noun 1. sometimes capitalized N&R : a basic phenazine dye used chiefly as a biological stain and acid base indicator 2. : a dark red to purplish red that is lighter and stronger than plum violet or sultana and paler than wild cherry …   Useful english dictionary

  • red — One of the primary colors, occupying the lower extremity of the spectrum at the other end from violet. For individual r. dyes, see specific name. [A.S. reád] * * * radiation experience data; rapid erythrocyte degeneration; repeat expansion… …   Medical dictionary

  • Neutral — Neu tral, a. [L. neutralis, fr. neuter. See {Neuter}.] 1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent. [1913 Webster] The heart can not possibly remain neutral, but… …   The Collaborative International Dictionary of English

  • Neutral axis — Neutral Neu tral, a. [L. neutralis, fr. neuter. See {Neuter}.] 1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent. [1913 Webster] The heart can not possibly remain… …   The Collaborative International Dictionary of English

  • Neutral equilibrium — Neutral Neu tral, a. [L. neutralis, fr. neuter. See {Neuter}.] 1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent. [1913 Webster] The heart can not possibly remain… …   The Collaborative International Dictionary of English

  • Neutral salt — Neutral Neu tral, a. [L. neutralis, fr. neuter. See {Neuter}.] 1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent. [1913 Webster] The heart can not possibly remain… …   The Collaborative International Dictionary of English

  • Neutral surface — Neutral Neu tral, a. [L. neutralis, fr. neuter. See {Neuter}.] 1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent. [1913 Webster] The heart can not possibly remain… …   The Collaborative International Dictionary of English

  • Neutral tint — Neutral Neu tral, a. [L. neutralis, fr. neuter. See {Neuter}.] 1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent. [1913 Webster] The heart can not possibly remain… …   The Collaborative International Dictionary of English

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