| 释义 | 
		va·le·ro·lactone \və|li(ˌ)rō, |valərō+\ noun Etymology: International Scientific Vocabulary valer- + lactone  : the lactone C5H8O2 of any hydroxy derivative of valeric acid; especially  : the γ-lactone found in pyroligneous acid, made synthetically, and used chiefly as a solvent |