geometry (counting)

in radioanalytical chemistry
https://doi.org/10.1351/goldbook.G02623
A term used colloquially to signify the arrangement in space of the various components in an experiment, particularly the @R05088@ and the @R05054@ in radiation measurements.
Source:
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2520 [Terms] [Paper]