shadowgraph

plural shadowgraphs · alternative shadow-graph · alternative shadow graph

1. A shadow-picture; a radiograph or X-ray photograph; a sciagram.

   `There you have its exemplification, a shadowgraph of vapour, penetrated by a single concrete element - my Mind.

   1930, Norman Lindsay, Redheap, Sydney, N.S.W.: Ure Smith, →OCLC, page 108

2. natural sciencesAn optical technique of visualizing patterns of fluid flow by using differences in refractive index

present singular third person shadowgraphs · participle present shadowgraphing · participle past shadowgraphed · past shadowgraphed · alternative shadow-graph · alternative shadow graph

1. transitiveTo outline in a shadow-picture on a screen.
2. artsTo take a picture by means of X-ray, radium, or similar source of actinic radiation.