Commissioner can be pictured around a single moment: a job being handed over. Someone holds a task, a department, or a question that needs answering, and passes it to another person to carry. The one who takes it and is answerable for it is a commissioner — whether that job is running the water department, sitting on a panel of five, or heading a city police force. Look at the same moment from the other side and you see the fourth meaning: the person doing the handing over.
From the word’s history
The supplied Wiktionary etymology tree runs from Latin committere (con- plus mittere, to send or entrust) to commissio and the Medieval Latin agent form in -arius. The idea of entrusting a task is still the thread through all the modern uses.
來源的 Wiktionary 詞源樹從拉丁文 committere（con- 加 mittere，「交託、送出」）走到 commissiō，再到中世紀拉丁文的 -arius（做某事的人）。「把事情交託出去」這個意思，今天還貫穿著這個字的每一種用法。
Wiktionary (kaikki extract 3f6f69a190036ae4), entry 'commissioner': etymology tree Latin committō > commissiō > -ārius.
登入就可以看每一支怎麼連回核心畫面。