trillium

/ˈtɹɪli.əm/

//ˈtɹɪli.əm// noun

"trillium" is a 8-letter English headword indexed on PlainSpell.

The verdict

“trillium” is uncommon English (frequency #59,774 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.

#59,774
frequency rank, English
3,151
“T” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any of several perennial flowering plants, of the genus Trillium, having flowers with three petals

Corpus desk

Index EN-trillium · trillium · English

trillium · rank #59,774 · 0 variants · 0 confusables

  • FREQ-RARE #59,774
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH triglyceride

Nearest frequency peer: triglyceride (-1 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 “trillium”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for trillium
PropertyValue
Headwordtrillium
LanguageEnglish
Part of speechNoun
IPA/ˈtɹɪli.əm/
Letters8
Frequency rank#59,774
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “trillium” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).trilliumfalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “triglyceride” (#59,773), “Trinitarian” (#59,775), “trice” (#59,772). Among 3,151 “T” headwords, “trillium” is #59,774. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

trillium is uncommon English at frequency #59,774 among 3,151 “T” headwords, classed as anoun, transcribed /ˈtɹɪli.əm/. Rarity is why readers land here mid-draft. Gloss: "Any of several perennial flowering plants, of the genus Trillium, having flowers with three petals".

The misspelling generator found no plausible variants for trillium, since its letter pattern doesn't lend itself to common typo substitutions. This headword has no recorded confusable partner, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From the genus name. The correct English form is trillium, spelled T-R-I-L-L-I-U-M.

Definition

  1. 1
    Any of several perennial flowering plants, of the genus Trillium, having flowers with three petals

Etymology

From the genus name.

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 "trillium"?
"trillium" is spelled T-R-I-L-L-I-U-M. The IPA pronunciation is /ˈtɹɪli.əm/.
What does "trillium" mean?
As a noun, "trillium" means: Any of several perennial flowering plants, of the genus Trillium, having flowers with three petals
How do you pronounce "trillium"?
The IPA (International Phonetic Alphabet) transcription for "trillium" is /ˈtɹɪli.əm/. 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 "trillium"?
From the genus name. 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 "trillium", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list