seagrass

/ˈsiˌɡɹæs/

//ˈsiˌɡɹæs// noun

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

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

The verdict

“seagrass” is uncommon English (frequency #62,492 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#62,492
frequency rank, English
54,294
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of various grass-like marine plants that grow underwater in salt water.

Key facts for seagrass
PropertyValue
Headwordseagrass
LanguageEnglish
Part of speechNoun
IPA/ˈsiˌɡɹæs/
Letters8
Frequency rank#62,492
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “seagrass” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

seagrass is uncommon English at frequency #62,492 among 54,294 “S” headwords, classed as anoun, transcribed /ˈsiˌɡɹæs/. Rarity is why readers land here mid-draft. Gloss: "Any of various grass-like marine plants that grow underwater in salt water.".

Our edit-distance generator produced no likely misspellings for seagrass, since its letter pattern doesn't lend itself to common typo substitutions. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From sea + grass. The correct English form is seagrass, spelled S-E-A-G-R-A-S-S.

Definition

  1. 1
    Any of various grass-like marine plants that grow underwater in salt water.

Etymology

From sea + grass.

This word in other languages

herbier marin(Français)Seegras(Deutsch)

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 "seagrass"?
"seagrass" is spelled S-E-A-G-R-A-S-S. The IPA pronunciation is /ˈsiˌɡɹæs/.
What does "seagrass" mean?
As a noun, "seagrass" means: Any of various grass-like marine plants that grow underwater in salt water.
How do you pronounce "seagrass"?
The IPA (International Phonetic Alphabet) transcription for "seagrass" is /ˈsiˌɡɹæs/. 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 "seagrass"?
From sea + grass. 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.

Using “seagrass”

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

  • The one correct English spelling is S-E-A-G-R-A-S-S - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈsiˌɡɹæs/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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