Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
span of existence
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "span of existence" is correct and usable in written English.
It can be used to refer to the duration or extent of someone's or something's life or presence in the world. Example: "The span of existence for many species can be drastically affected by environmental changes."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Wiki
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
2 human-written examples
Now 69, Mr. Simon is contemplating mortality and the entire span of existence.
News & Media
We can do little or nothing to alter our fated span of existence but we determine what we accomplish and what we are remembered for.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
On the other hand, the evolution of the worm nervous system and of the metabolism of the bacterium might have allowed more efficient architectures to emerge, due to the evolutionary time-scales (hundreds of millions of years or more) running much longer than the time-span of existence of the commercial Internet.
Science
In the new report, the scientists have expanded the range of likely warming to 1.5-6°.Of course, it is true that short spans of time such as a century are hardly relevant compared with the span of human existence, never mind the earth's, and that climate change per se is not new.
News & Media
"Teach the student about the theory of evolution, when it started off and the life span of our existence".
(Subject 1942) "Teach the student about the theory of evolution, when it started off and the life span of our existence".
Poisons have been used for many purposes across the span of human existence, most commonly as weapons, anti-venoms, and medicines.
Wiki
How do we show, for instance, 'deep accountability' to fellow human beings to foster wellness, dignity, and capabilities, over and beyond efforts to tackle disease, misery, and pathologies during the span of human existence?
Science
But in fact we know that the history of the entities containing these relatively most stable genes is composed of many different time scales of stabilisation, so a gene tree provides no reason for assuming a similar general structure of species throughout the evolutionary time span of its existence.
Science
Mr. Eins himself can span several realms of existence in a single conversation.
News & Media
Habitable planets have probably been present in it for at least 10 billion years, which is more than twice the span of Earth's existence.
News & Media
Expert writing Tips
Best practice
When discussing abstract concepts or philosophical ideas, use "span of existence" to emphasize the temporal dimension of their being. For example, "The philosopher contemplated the "span of existence" and its implications for morality".
Common error
Avoid using "span of existence" when you actually mean the scope, area, or realm in which something exists. "Sphere of existence" is more appropriate when referring to domains or environments, while "span of existence" refers to duration.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "span of existence" primarily functions as a noun phrase, acting as the subject or object of a sentence. As supported by Ludwig AI, the phrase is considered grammatically correct and usable in written English. It refers to the duration or extent of something's life or presence.
Frequent in
Science
35%
News & Media
35%
Encyclopedias
15%
Less common in
Wiki
15%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "span of existence" refers to the duration or extent of something's life or being. Ludwig AI confirms its grammatical correctness and usability across different contexts. Although it's not as common as other similar phrases, its precise meaning makes it valuable in discussions requiring a focus on duration, particularly in scientific, philosophical, and news-related discussions. While alternatives exist, it's important to differentiate it from phrases like "sphere of existence", which refers to domain rather than duration. Overall, "span of existence" is a useful and accurate phrase for describing the temporal aspect of something's being.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
course of existence
This alternative emphasizes the progression or journey through life or being.
time of existence
This alternative focuses specifically on the temporal aspect of being, highlighting the duration.
length of existence
This alternative directly quantifies the duration of something's being.
scope of existence
This alternative broadens the meaning to encompass the range or extent of something's being, not just its duration.
realm of existence
This alternative implies a specific domain or sphere in which something exists.
period of being
This is a more formal alternative that emphasizes a specific timeframe.
duration of life
This alternative focuses specifically on living entities and their lifespan.
timeframe of being
This suggests a specific and measurable interval of existence.
phase of being
This alternative considers existence as part of a larger cycle or process.
era of being
This suggests existence within a specific, defined period of history or time.
FAQs
How can I use "span of existence" in a sentence?
You can use "span of existence" to discuss the duration or extent of something's life or being. For example: "The study examined the "span of existence" of various species in the ecosystem."
What phrases are similar to "span of existence"?
Similar phrases include "course of existence", "time of existence", and "length of existence". The best choice depends on the specific context.
Is "span of existence" formal or informal?
"Span of existence" is suitable for both formal and informal contexts. Its appropriateness depends more on the overall tone of the writing than the phrase itself.
What's the difference between "span of existence" and "sphere of existence"?
"Span of existence" refers to the duration or timeframe of something's being, while "sphere of existence" refers to the domain, realm, or environment in which something exists. They are not interchangeable.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested