Function: noun
Date: 1898
1 : the average length of life of a kind of organism or of a material object especially in a particular environment or under specified circumstances
2 : the duration of existence of an individual
Function: noun
Date: 1898
1 : the average length of life of a kind of organism or of a material object especially in a particular environment or under specified circumstances
2 : the duration of existence of an individual
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012