Used up, consumed, or spent; having discharged energy, effort, or resources.
From Latin 'expendere' meaning 'to weigh out, pay out,' composed of 'ex-' (out) and 'pendere' (to weigh). The word evolved from literal weighing of payment to any form of using up resources or energy.
The beauty of 'expended' lies in its suggestion of purposeful depletion - unlike simply 'spent' or 'used,' it implies that something valuable was deliberately invested toward a goal. In military contexts, 'expended ammunition' carries weight beyond mere consumption, suggesting strategic deployment of finite resources.
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