What does extern mean?

extern (noun): A person affiliated with an institution in a lesser capacity, for example, as a non-resident or as a part-time affiliate. As a hashtag, #extern carries this topic across social platforms.

How popular is #extern?

#extern has no measured public activity on the open social web in the last 7 days. It is currently wide open.

What hashtags are related to #extern?

No related hashtags with measured usage were found for #extern.

How much does it cost to own #extern?

#extern is available as a #name from $520.70 per year. You can claim it by card at https://hashtag.org/checkout/portal-name?name=extern or with tokens on hashtag.space at https://hashtag.space/#extern.

#extern

Name: #extern — a #name on hashtag.org
Brand: hashtag.org
Price: 520.70 USD
Availability: InStock

Live, measured metrics for the hashtag #extern from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #extern

This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.

$520.70/ year · 6-character #name

Claim #extern — $520.70/yr→Buy on hashtag.space (web3)

card via hashtag.org · tokens via hashtag.space

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Uses / 7 days

Mastodon

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Accounts / 7 days

Mastodon

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Day-by-day usage

measured · mastodon.social (Mastodon public tags API) · fetched 2026-09-26 14:56 UTC

No measured public usage for #extern in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.

Related hashtags

measured · mastodon.social (Mastodon public search API) · fetched 2026-09-26 14:56 UTC

No related tags with measured usage found for #extern.

Live pulse

measured · Mastodon tag timeline · fetched 2026-09-26 14:56 UTC

No recent public posts found for #extern on Mastodon. Nothing measured, so nothing shown.

What “extern” means

Wiktionary · Wikipedia

extern/ˈɛk.ˌstɜː(ɹ)n/

nounA person affiliated with an institution in a lesser capacity, for example, as a non-resident or as a part-time affiliate.
adjectiveExternal; outward; not inherent

Full entry on Wiktionary →

In the C programming language, and its predecessor B, an external variable is a variable defined outside any function block. On the other hand, a local (automatic) variable is a variable defined inside a function block.As an alternative to automatic variables, it is possible to define variables that are external to all functions, that is, variables that can be accessed by name by any function. Because external variables are globally accessible, they can be used instead of argument lists to commu

“External variable” on Wikipedia (CC BY-SA) →

#extern across platforms

every network with a public tag surface

Follow #extern straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/extern