sori

noun

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

The verdict

“sori” is uncommon English (frequency #74,528 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#74,528
frequency rank, English
6,566
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Copper sulphate, especially combined with other impurities, particularly in the context of the Roman Empire.

Corpus desk

Index EN-sori · sori · English

sori · rank #74,528 · 0 variants · 0 confusables

  • FREQ-RARE #74,528
  • LEN-MID 4 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH sonogram

Nearest frequency peer: sonogram (-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 “sori”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for sori
PropertyValue
Headwordsori
LanguageEnglish
Part of speechNoun
Letters4
Frequency rank#74,528
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “sori” 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).sorifalls 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: “sonogram” (#74,527), “spall” (#74,529), “solarium” (#74,525). Among 6,566 “S” headwords, “sori” is #74,528. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

sori is uncommon English at frequency #74,528 among 6,566 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Copper sulphate, especially combined with other impurities, particularly in the context of the Roman Empire.".

Zero misspellings are on record for sori in our index, which points to an orthography that plays by predictable English rules. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: . Latin [Term?]? The correct English form is sori, spelled S-O-R-I.

Definition

  1. 1
    Copper sulphate, especially combined with other impurities, particularly in the context of the Roman Empire.

Recorded use

Wiktionary examples

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

  1. […] copper which had contracted an efflorescence from age; the Sori was sulphate of copper combined with zinc or other impurities; and the Misy was a combination of sulphate of copper with sulphate of iron, the predominance of the[…]
  2. There is another difference in that chalcitis contains three kinds of mineral, copper, misy and sori, each of which we shall describe in its place. The approved variety of chalcitis is honey-coloured, and streaked with fine veins and is friable and not stony. It is also thought to be more useful when fresh[…]

Etymology

. Latin [Term?]?

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 "sori"?
"sori" is spelled S-O-R-I.
What does "sori" mean?
As a noun, "sori" means: Copper sulphate, especially combined with other impurities, particularly in the context of the Roman Empire.
What is the origin of the word "sori"?
. Latin [Term?]? 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 "sori", 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