alga

/ˈæl.ɡə/

//ˈæl.ɡə// noun

"alga" is a 4-letter English headword indexed on PlainSpell.

The verdict

“alga” is uncommon English (frequency #64,173 among 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.

#64,173
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any of many aquatic photosynthetic organisms, including the seaweeds, whose size ranges from a single cell to giant kelps and whose biochemistry and forms are very diverse, some being eukaryotic.

Corpus desk

Index EN-alga · alga · English

alga · rank #64,173 · 0 variants · 0 confusables

  • FREQ-RARE #64,173
  • LEN-MID 4 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH Aleksei

Nearest frequency peer: Aleksei (-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 “alga”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for alga
PropertyValue
Headwordalga
LanguageEnglish
Part of speechNoun
IPA/ˈæl.ɡə/
Letters4
Frequency rank#64,173
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “alga” 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).algafalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “Aleksei” (#64,172), “Altai” (#64,175), “Alda” (#64,170). Among 3,931 “A” headwords, “alga” is #64,173. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

alga is uncommon English at frequency #64,173 among 3,931 “A” headwords, classed as anoun, transcribed /ˈæl.ɡə/. Rarity is why readers land here mid-draft. Gloss: "Any of many aquatic photosynthetic organisms, including the seaweeds, whose size ranges from a single cell to giant kelps and whose biochemistry and forms are very diverse, some being eukaryotic.".

Our edit-distance generator produced no likely misspellings for alga, which points to an orthography that plays by predictable English rules. Our dataset records no confusable match here, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From Latin alga. The correct English form is alga, spelled A-L-G-A.

Definition

  1. 1
    Any of many aquatic photosynthetic organisms, including the seaweeds, whose size ranges from a single cell to giant kelps and whose biochemistry and forms are very diverse, some being eukaryotic.

Recorded use

Wiktionary example

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

  1. For example, the antitumour depsipeptide kahalalide F was isolated from the opisthobranch mollusc Elysia rufescens, and is used by both the mollusc and its dietary alga Bryopsis spp.

Etymology

From Latin alga.

This word in other languages

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 "alga"?
"alga" is spelled A-L-G-A. The IPA pronunciation is /ˈæl.ɡə/.
What does "alga" mean?
As a noun, "alga" means: Any of many aquatic photosynthetic organisms, including the seaweeds, whose size ranges from a single cell to giant kelps and whose biochemistry and forms are very diverse, some being eukaryotic.
How do you pronounce "alga"?
The IPA (International Phonetic Alphabet) transcription for "alga" is /ˈæl.ɡə/. 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 "alga"?
From Latin alga. 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 "alga", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 4 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list