urea
尿素
覚え方のコツ Memory Tip
urine（尿）や urology（泌尿器学）と共通する ur- の連想から、「尿に関係して名づけられた化合物」と覚えます。ただし urea は尿そのものではなく、体内で窒素を運んで尿中に排出される化合物で、肥料や樹脂にも使われます。
Connect urea with urine and urology through the recognizable ur- association. This helps you remember why the substance received its name, but keep the meanings separate: urea is not urine itself. It is a specific nitrogen-containing compound that the body produces during protein metabolism and removes mainly through urine. For a practical image, think of a laboratory report measuring blood urea or a bag of urea fertilizer supplying nitrogen to crops. These two settings reinforce both its biological and industrial uses.
urea の類義語・関連語
urea の語源・成り立ち Etymology
urea は19世紀の化学語で、フランス語 urée をラテン語化して英語に入った語です。元はギリシャ語 ouron「尿」にさかのぼり、語根 ur-/our- は urine や urology にも見られるので、「尿に由来する物質」という名づけだと分かります。関連語は urine、urology。
The English chemical term urea entered the language in the nineteenth century through French urée, which was built from a word for urine and given a chemical noun ending. The deeper source is associated with Greek ouron, meaning “urine.” The same broad root connection appears in English words such as urine and urology, reflecting the substance’s original identification in urine.
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