Serum

[ˈzeːʁʊm]

/[ˈzeːʁʊm]/ noun

The verdict

“Serum” has 7 generated spelling variants in the German index at frequency #20,407. The variants make it a useful spelling check.

#20,407
frequency rank, German
8,027
“S” headwords
7
tracked misspellings
14
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Blutserum, ein Bestandteil des Blutes

Corpus desk

Index DE-serum · Serum · German

Serum · rank #20,407 · 7 variants · 14 confusables

  • FREQ-MID #20,407
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-MID 14 pairs
  • VAR-MID 7 variants
  • BOOK-DENSE 8,027
  • PHOTO-FINISH Sheriff

Nearest frequency peer: Sheriff (+1 rank slots)

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Rang-Peers am Tippfehler-Magneten „Serum“

Gleiche Seltenheitsbandbreite: nützlich, wenn ein Tippfehler auf ein Peer-Lemma trifft

corpus weight

What this shows „Serum“ sitzt unter diesen FrequencyWords-Peers; die Tippfehlertiefe steht separat im Edit-Distance-Chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

Serum vs sum
40% similar
Serum vs Strom
60% similar
Serum vs Sirup
60% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for Serum
PropertyValue
HeadwordSerum
LanguageGerman
Part of speechNoun
IPA[ˈzeːʁʊm]
Letters5
Frequency rank#20,407
Misspellings tracked7
Confusable pairs14
SourceWiktionary (kaikki.org)

Häufigkeitslage von Tippfehler-Magnet „Serum“

Die Häufigkeit läuft von den wenigen Alltagswörtern (links) bis zur langen, seltenen Schwanzseite (rechts).Serumliegt hier neben dem Tippfehler-Druck:

#1#100#1K#10K#100K
← used constantlyrarely used →

Die Ticks laufen logarithmisch; jeder ist rund zehnmal seltener. Peers derselben Seltenheitsbandbreite: „Sheriff“ (#20,408), „serbischen“ (#20,405), „signifikante“ (#20,409). Unter 8,027 „S“-Lemmata liegt „Serum“ bei #20,407. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 7 spelling variants around Serum (IPA [ˈzeːʁʊm]), anoun. Corpus frequency is #20,407 among 8,027 “S” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 7 likely wrong-spelling variants for Serum, with forms such as "esrum", "sermu", and "serrum". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 14 confusable-pair relationships, "sum", "Strom", "Sirup", and more, where similar look or sound leads writers to substitute one word for another in context.

This entry's etymology isn't recorded, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct German form is Serum, spelled S-E-R-U-M.

Definition

  1. 1
    Blutserum, ein Bestandteil des Blutes
  2. 2
    Immunserum, Antikörper zum Zwecke einer Schutzimpfung
  3. 3
    Gegengift, eine Flüssigkeit, die zur Heilung von Vergiftungen (auch durch Biss- und Stichwunden) eingesetzt wird
  4. 4
    zähflüssige Darreichungsform

Recorded use

Wiktionary examples

These source excerpts show how Serum appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Im Serum finden sich die Antikörper (Agglutinine) Anti-A (a) und Anti-B (ß).
  2. Bei einer passiven Impfung werden nicht Erreger gespritzt, sondern ein Serum mit spezifischen Antikörpern.

Synonyms

This word in other languages

Common misspellings

Also misspelled as:

  • esrum
  • sermu
  • serrum
  • serumm
  • seurm
  • sreum
  • sserum

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of Serum - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

esrum2sermu2serrum1serumm1seurm2sreum2sserum1
Edit distance from "Serum"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 German corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Serum"?
"Serum" is spelled S-E-R-U-M. The IPA pronunciation is [ˈzeːʁʊm].
What does "Serum" mean?
As a noun, "Serum" means: Blutserum, ein Bestandteil des Blutes
What words are commonly confused with "Serum"?
"Serum" is commonly confused with "sum", "Strom", "Sirup". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "Serum"?
The IPA (International Phonetic Alphabet) transcription for "Serum" is [ˈzeːʁʊm]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "Serum" come from?
"Serum" is a German word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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.

Similar German words by spelling shape

Same letter count and similar misspelling depth for "Serum", not the corpus desk frequency band.

Same letter count

Frequency-ranked German headwords with 5 letters (nearest by frequency rank).

Similar misspelling depth

Headwords with a similar count of attested misspellings (7 here; floor ≥5).

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

Source: FrequencyWords open word-frequency list