早そう老ろう

noun, noun which may take the genitive case particle 'no'

premature aging; premature ageing

Medical and biological term for aging that occurs earlier than normal. Often used in compound nouns like 早老症 (progeria).

• 早そう老ろう症しょうは遺い伝でん子しの突とつ然ぜん変へん異いによって引ひき起おこされる。

  Progeria is caused by a genetic mutation.

• 早そう老ろうの兆ちょう候こうが30代だいで現あらわれた。

  Signs of premature aging appeared in his thirties.