寿命|じゅみょうjumyou[0]heiban (flat)

1. nounlifespan; life; lifetime
   これらの発見はっけんのおかげで人間にんげんの寿命じゅみょうが以前いぜんの２倍ばいになった。↗

   Thanks to these discoveries, man's life span has become twice as long as before.
2. nounlife (of a battery, lightbulb, etc.); service life; end of an object's (useful) life
   作動さどう温度おんどが高たかいと、潤滑剤じゅんかつざいの寿命じゅみょうは短みじかくなる。↗

   High operating temperatures shorten lubricant life.

• Synonym命数めいすうWrittenWritten/formal prose for one's allotted span of life or destiny, with a fatalistic nuance, as in 「命数が尽きる」.
• Related短命たんめいNeutralNeutral antonym: a short life, the opposite of a long 「寿命」.
• Related生涯しょうがいNeutralNeutral: one's life as lived, stressing experiences, as in 「生涯独身」; 「寿命」 focuses on how long one lives or how long a device lasts.
• Related一生いっしょうNeutralNeutral and common in speech: one's whole life from birth to death, as in 「一生の思い出」.
• Related一期いちごWrittenWritten/formal prose for one's life; today it appears mostly in the set phrase 「一期一会」.
• RelatedライフNeutralNeutral loanword for life or one's lifestyle, also the lives in a game, as in 「ライフスタイル」.
• Related一生涯いっしょうがいNeutralNeutral: one's whole life or a lifelong span; carries a more solemn tone than 「一生」.
• Related生存期間せいぞんきかんWrittenFormal term for a survival period, used mainly in medicine and statistics.
• Related畢生ひっせいWrittenWritten/formal prose for one's whole life, with a solemn, literary coloring, as in 「畢生の大作」.

Use 「寿命」 for how long a living thing lives or how long a device, battery, etc. keeps working, as in 「平均寿命」「電池の寿命」. For a person's life as lived or experienced, choose 「生涯」 or 「一生」; 「畢生」 works for lifelong endeavors in formal prose. The opposite of a long 「寿命」 is 「短命」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 生物せいぶつの一生いっしょうの長ながさ。
2. 機器きき類るいが使用しよう可能かのうな期間きかんの長ながさ。
3. 語義ごぎ1.、2.の限界げんかいに達たっしたこと。本来ほんらい死しぬべき時期じき。壊こわれるべき時期じき。