rhombus

/ˈɹɒmbəs/

//ˈɹɒmbəs// noun

By · According to Wiktionary data (CC BY-SA) ·

"rhombus" is a 7-letter English headword indexed on PlainSpell.

The verdict

“rhombus” is uncommon English (frequency #82,726 among 3,094 “R” headwords), classed as a noun. The kind of spelling people second-guess.

#82,726
frequency rank, English
3,094
“R” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A parallelogram having all sides of equal length.

Corpus desk

Index EN-rhombus · rhombus · English

rhombus · rank #82,726 · 0 variants · 0 confusables

  • FREQ-RARE #82,726
  • LEN-LONG 7 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,094
  • PHOTO-FINISH Revelstoke

Nearest frequency peer: Revelstoke (-2 rank slots)

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.

Long-tail ranks near “rhombus”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “rhombus” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for rhombus
PropertyValue
Headwordrhombus
LanguageEnglish
Part of speechNoun
IPA/ˈɹɒmbəs/
Letters7
Frequency rank#82,726
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “rhombus” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).rhombusfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “Revelstoke” (#82,724), “respectably” (#82,723), “reparative” (#82,721). Among 3,094 “R” headwords, “rhombus” is #82,726. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

rhombus is uncommon English at frequency #82,726 among 3,094 “R” headwords, classed as anoun, transcribed /ˈɹɒmbəs/. Rarity is why readers land here mid-draft. 5 senses are on record.

No misspelling variants are generated for rhombus in our index, since its letter pattern doesn't lend itself to common typo substitutions. We don't track a confusable pairing for this entry, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: Learned borrowing from Latin rhombus, from Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”). Doublet of rhomb and rhumb. The correct English form is rhombus, spelled R-H-O-M-B-U-S.

Definition

  1. 1
    A parallelogram having all sides of equal length.
  2. 2
    A parallelogram having all sides of equal length.
  3. 3
    In early Greek religion, an instrument whirled on the end of a string similar to a bullroarer.
  4. 4
    Any of several flatfishes, including the brill and turbot, once considered part of the genus Rhombus, now in Scophthalmus.
  5. 5
    Snails, now in genus Conus or family Conidae.

Recorded use

Wiktionary examples

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

  1. The Greeks also used an instrument called a rhombus, or witches' wheel. As the wheel spun round, it was thought that influence was gained over certain people or circumstances.
  2. the greedy Tuberon or Shark arm'd with a double row of venemous teeth pursues them, directed by a little Rhombus, Musculus or pilot-fish that scuds to and fro to bring intelligence [...].

Etymology

Learned borrowing from Latin rhombus, from Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”). Doublet of rhomb and rhumb.

Synonyms

diamondrhomb

This word in other languages

rombo(Español)losange(Français)Rhombus(Deutsch)losango(Português)

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 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "rhombus"?
"rhombus" is spelled R-H-O-M-B-U-S. The IPA pronunciation is /ˈɹɒmbəs/.
What does "rhombus" mean?
As a noun, "rhombus" means: A parallelogram having all sides of equal length.
How do you pronounce "rhombus"?
The IPA (International Phonetic Alphabet) transcription for "rhombus" is /ˈɹɒmbəs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "rhombus"?
Learned borrowing from Latin rhombus, from Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”). Doublet of rhomb and rhumb. 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.

Similar English words by spelling shape

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

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

Redland#82,718Rolodex#82,734railgun#82,705saguaro#82,747

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

Source: FrequencyWords open word-frequency list