life span

noun
Updated on: 13 Apr 2018
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

Examples of life span in a Sentence

  1. the average life span of house cats

  2. increase the human life span

Recent Examples of life span from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'life span.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of life span

1831

life span Synonyms


LIFE SPAN Defined for English Language Learners

life span

  • : the amount of time that a person or animal actually lives


Medical Dictionary

life span

noun \ ˈlīf-ˌspan \
1 : the duration of existence of an individual
2 : the average length of life of a kind of organism or of a material object especially in a particular environment or under specified circumstances


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