Abstract
Abstract The use of Latin origin terms, relevant for sample characterization modalities, is described with a focus on samples under controlled conditions, samples within devices, and samples during physico-chemical evolution. The terms in vitro , in vivo , in situ , ab initio , in silico , post mortem , ex situ , posthumous , in vacuo , (in) operando , post facto , and ex post facto , as used in the scientific literature, are considered. Uses of the Latin origin terms in situ , extra situm , in operando , in vivo , in vacuo , in vitro , extra vivum , post facto and ex post facto , ab initiis , computatro , and post mortem are discussed. It is suggested that these terms are to be used without hyphenation and that all Latin derived terms are set in italic font.