The term 'zero-based' is a modern English compound, primarily emerging in mid-20th century management and accounting jargon. Its first element, 'zero', traces a fascinating journey from the Sanskrit concept of 'śūnya' (void), which was translated into Arabic as 'ṣifr' (empty), entered European languages, and came to represent the numerical concept of nothingness. The second element, 'base', originates from the Greek 'basis', meaning a step or pedestal—the fundamental support upon which something is built. When combined with the adjectival suffix '-ed', the term literally constructs the meaning 'having a foundation at nothing'. This logic perfectly captures the method's core principle: rejecting the inertia of past expenditures or assumptions and building a budget or plan anew from a foundational point of zero.

Structure: zero (none) + base (foundation) + ed (adjective suffix) - zero: From Italian 'zero', via Medieval Latin 'zephirum', from Arabic 'ṣifr', meaning 'empty, nothing'. In this compound, it functions as a modifier meaning 'from nothing'. - base: From Old French 'base', from Latin 'basis', from Greek 'basis' (a step, pedestal). In this compound, it functions as the core noun meaning 'foundation or starting point'. - ed: A native English suffix forming adjectives from nouns or verbs, indicating 'having the characteristics of'.