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Glite Dictionary
pyrogallic

pyrogallic

9.9
Relating to a chemical once used in early photography
  • adjective
  • /ˌpaɪroʊˈɡælɪk/
  • Specialized
: pirogallico
  • He conducted experiments using a pyrogallic solution as a photographic developer.

Examples

  • The pyrogallic process played a significant role in early photographic history.

  • A pyrogallic acid test was used to detect certain metals in the laboratory.

  • The pyrogallic acid was used in the experiment.

  • Is pyrogallic acid safe for use in laboratories?

  • The chemist prepared a pyrogallic solution to analyze the sample in the lab.

  • In the darkroom, he used pyrogallic acid to develop the black and white photographs.

  • The pyrogallic testing method provided accurate results for metal detection.

Compounds

pyrogallic acid
  • Specialized
9.9

A white poisonous chemical used to treat some skin problems and develop photos

Surface Forms

pyrogallic positive

Morphology

pyrogallic = gallic (opaque) = pyro + gall + ic

The word is formed by adding the technical prefix 'pyro-' to 'gallic', but the resulting chemical term is not predictable for an average learner.

Etymology

Pyrogallic comes from pyro- meaning 'fire' and gallic from 'gall', a hard growth on oak trees once used to make ink. People made a chemical by heating those galls, so pyrogallic now describes a substance or process that comes from that heated material.