mock-up

The term 'mock-up' is a compound noun formed from the verb 'mock', meaning to imitate or simulate, and the adverbial particle 'up', which in this context suggests the action is brought to completion or assembled. The word 'mock' itself has a complex history, likely entering English from Old French, where it carried connotations of ridicule, a sense which softened over time to focus more on imitation. The specific compound 'mock-up' emerged in the early 20th century, particularly in industrial and engineering contexts, to denote a full-scale, non-functional model built for practical evaluation, thus logically combining the idea of a simulated object ('mock') with the concept of a fully constructed entity ('up').

Structure: mock (imitation) + up (completive particle) - mock: From Middle English mokken, of uncertain origin, possibly from Old French mocquer (to deride). Its functional role is to convey the sense of imitation or simulation. - up: From Old English up, upp, an adverb and preposition. Its functional role here is as a completive or intensive particle, indicating the creation or assembly of the imitation into a complete form.