Mercurius

name

The verdict

“Mercurius” is outside the top-ranked German vocabulary, used as a proper noun - the kind of word writers most often double-check.

Unranked
below top-frequency German
9
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Merkur

Key facts for Mercurius
PropertyValue
HeadwordMercurius
LanguageGerman
Part of speechProper noun
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “Mercurius” sits in German frequency

Mercurius falls outside the top-100,000 ranked German words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The German entry for Mercurius is 9 letters long, classified as a proper noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "Merkur".

The misspelling generator found no plausible variants for Mercurius, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

This entry carries no recorded etymology, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct German form is Mercurius, spelled M-E-R-C-U-R-I-U-S.

Definition

  1. 1
    Merkur

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Mercurius"?
"Mercurius" is spelled M-E-R-C-U-R-I-U-S.
What does "Mercurius" mean?
As a proper noun, "Mercurius" means: Merkur
What language does "Mercurius" come from?
"Mercurius" is a German word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “Mercurius”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct German spelling is M-E-R-C-U-R-I-U-S - every other letter order is a misspelling in standard orthography.
  • Browse more German words and confusable pairs in the same reference. German words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list