noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An instrument used to determine the true contour and dimensions of any internal organ or other object rendered visible by X-rays, the latter being deflected so as to be made parallel.

Etymology

From ortho- + dia- + -graph.

Related phrases

internal organx ray

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.