Lifespan: meaning, definitions and examples

Use 'lifespan' to talk about the total number of years a person, animal, or object is expected to live or function.

• The average lifespan of a domestic cat is around 15 years

Use 'life expectancy' when talking about the average period a person or organism is expected to live, often based on statistical averages. It is commonly used in health and demographic studies.

• Due to better healthcare, the life expectancy in many countries has increased

Use 'longevity' when referring to long life or long duration of service. It often implies a positive view on the length of life or durability.

• Her longevity in the company is a testament to her dedication and hard work

Use 'duration of life' to specifically denote the ongoing time from birth to death, often used in formal or technical contexts.

• The duration of life for some insects is only a few days

Describing the duration of life for people, animals, or objects.

• The average human lifespan has increased significantly over the last century
• Turtles have a remarkably long lifespan

Used when discussing the theoretical upper limit of lifespan a species or organism can reach.

• Research is focused on extending the maximum age potential of humans
• The maximum age potential of some types of trees is over a thousand years

Applicable when mentioning the time period an organism, object, or project will continue to exist or be functional. This can be used for both living beings and inanimate objects.

• The average lifespan of a domestic cat is about 15 years.
• The lifespan of this battery is approximately two years.

Typically used to describe how well an object or material can withstand wear, pressure, or damage. This word usually relates to inanimate objects and focuses on their ability to last under challenging conditions.

• The durability of this phone case ensures that it can protect your device from drops and scratches.
• Metal roofs are known for their durability in severe weather conditions.

Often utilized in marketing and advertising to emphasize that a product or material can maintain its performance or appearance for a long time. It has a positive connotation and is used to highlight the extended usability or effectiveness of a product.

• This paint boasts a long-lasting quality, keeping your walls vibrant for years.
• Customers appreciate the long-lasting quality of this skincare product.