laboratorium

noun

"laboratorium" is a 12-letter English headword indexed on PlainSpell.

The verdict

“laboratorium” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A laboratory.

Corpus desk

Index EN-laboratorium · laboratorium · English

laboratorium · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "L" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

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.

Key facts for laboratorium
PropertyValue
Headwordlaboratorium
LanguageEnglish
Part of speechNoun
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “laboratorium” in English

laboratoriumsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

laboratorium is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A laboratory.".

Our edit-distance generator produced no likely misspellings for laboratorium, and the word's spelling is regular enough that our generator found nothing worth flagging. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From Latin labōrātōrium. Doublet of laboratory. The correct English form is laboratorium, spelled L-A-B-O-R-A-T-O-R-I-U-M.

Definition

  1. 1
    A laboratory.

Recorded use

Wiktionary examples

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

  1. Chemical Laboratorium of Dr. Faustus, at drawing of curtain he is seen stiring, with a rack, in the flames of a Chauldron—Monarchs standing about—during change of Scene Music plays—all looking in Chauldron, some on tiptoe.
  2. Herr v. Storch, superintendent of our chemical laboratorium, subjected the milk from a cow with udder tuberculosis to chemical analysis, with the following results:[…]

Etymology

From Latin labōrātōrium. Doublet of laboratory.

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 "laboratorium"?
"laboratorium" is spelled L-A-B-O-R-A-T-O-R-I-U-M.
What does "laboratorium" mean?
As a noun, "laboratorium" means: A laboratory.
What is the origin of the word "laboratorium"?
From Latin labōrātōrium. Doublet of laboratory. See the full etymology section above for more details.
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.

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

Source: FrequencyWords open word-frequency list