'hydrazinecarboximidamide' is formed from the combination of 'hydrazine' and 'carboximidamide', both of which are chemical terms. 'Hydrazine' comes from 'hydrazo' (relating to nitrogen compounds) and 'carboximidamide' refers to a carboxylic acid derivative where the carboxyl group is replaced by an imidamide group.

'hydrazinecarboximidamide' is a modern chemical term created by combining the names of its constituent functional groups, following IUPAC nomenclature conventions.

The term has always referred to the specific chemical compound and has not undergone significant meaning change.