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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
hashtag symbol
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "hashtag symbol" is correct and usable in written English.
It can be used when referring to the symbol "#" that is commonly used in social media to categorize content or indicate a topic. Example: "To find more information on the event, search for the hashtag symbol followed by the event name."
✓ Grammatically correct
News & Media
Science
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
16 human-written examples
One effective way to build follower headcount is to use hashtags – words proceeded with a hashtag symbol – which help users to discover specific Instagram posts.
News & Media
Jennifer Van Grove believes the hashtag symbol is Facebook's "obvious hole".
News & Media
As footage of the incident emerged, this phrase quickly became a hashtag symbol of defiant unity.
News & Media
Please note: For simplicity's sake, from here on we'll refer to each chat without the hashtag symbol.
News & Media
To avoid this problem, people use the hashtag symbol # before a relevant keyword or phrase in their tweets to categorize those tweets and help them show more easily in each Twitter search.
Science
The central role that Maaco and Pitch hope Twitter will play in the campaign is demonstrated by the fact that the ads render "Maacover" as "#Maacover," including the hashtag symbol.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
Before performing this step, the noisy contents of tweets must be removed, such as emotion symbols (e.g., ❤❤), hashtag symbols, link url @username and others.
Hashtag symbols are often used to categorize certain Tweets so that they can display in searches for a specific keyword or phrase, or to mark or bring attention to specific keywords.
Wiki
In collective tagging systems, by tagging we can describe the content of an object – an image, a song or a document – label it using any lexical expression preceded by the "hashtag" (the symbol "#") and share it with our friends and followers or also recommend it to an audience of strangers.
Academia
Some Occupy groups have adopted the fist or hashtag as symbols.
News & Media
Earlier this year Facebook began supporting hashtags (the # symbol immediately preceding a subject or keyword), and at the time I wrote this piece on why businesses should care about them.
News & Media
Expert writing Tips
Best practice
When writing about hashtags, clarify that the "hashtag symbol" precedes the keyword or phrase. This helps readers understand how to properly use hashtags.
Common error
Avoid referring to the "hashtag symbol" as merely the "number sign" or "pound sign" without context, as these terms can be ambiguous. Always ensure the reader understands you're referring to its use in social media tagging.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "hashtag symbol" primarily functions as a noun phrase, identifying the specific character used to create hashtags. Ludwig examples show it used to explain the purpose and usage of the symbol.
Frequent in
News & Media
40%
Science
30%
Wiki
20%
Less common in
Academia
5%
Formal & Business
3%
Social Media
2%
Ludwig's WRAP-UP
The phrase "hashtag symbol" is a common and grammatically correct way to refer to the '#' character, especially in the context of social media. As Ludwig AI confirms, this term is usable in written English and primarily functions to describe or explain the symbol's purpose. It's frequently found in news articles, scientific papers, and wiki pages, indicating a neutral register. When using the phrase, remember to clarify its role in tagging and social media to avoid ambiguity. Common alternatives include "hash symbol", "pound symbol", and "number sign".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
"#" symbol
Explicitly refers to the symbol using quotation marks.
Hash symbol
Omits the word "tag", focusing on the symbol itself.
The symbol used for hashtags
Describes the symbol functionally.
The "#" character
Refers to it as a character rather than a symbol.
Pound symbol
Uses an alternative name for the same symbol.
Hashtag character
Combines "hashtag" with "character".
Number sign
Another common name for the '#', emphasizing its numerical association.
Hash mark
Uses a different term for the symbol
Social media tag symbol
Emphasizes its use in social media.
Octothorpe
A more technical term for the '#' symbol.
FAQs
What is another name for a "hashtag symbol"?
Another name for a "hashtag symbol" is "hash symbol", "pound symbol", or "number sign" depending on context.
How do I properly use a "hashtag symbol"?
The "hashtag symbol" is used to mark keywords or topics in social media. It is placed before a word or phrase without spaces to categorize the content, like this: #examplehashtag.
Why is the "hashtag symbol" important in social media?
The "hashtag symbol" helps users to discover content related to specific topics. By using hashtags, posts become searchable and can reach a wider audience interested in that topic.
What happens if I use other symbols within a "hashtag"?
The "hashtag" will only recognize the characters before the symbol. Therefore, avoid using punctuation marks or other symbols within a "hashtag" to ensure it functions correctly.
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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