biocide

/ˈbaɪəʊsaɪd/

//ˈbaɪəʊsaɪd// noun

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

The verdict

“biocide” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
7
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any action or substance that can destroy living organisms.

Corpus desk

Index EN-biocide · biocide · English

biocide · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 7 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "B" thin
  • PHOTO-UNK Peer pending

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.

Key facts for biocide
PropertyValue
Headwordbiocide
LanguageEnglish
Part of speechNoun
IPA/ˈbaɪəʊsaɪd/
Letters7
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “biocide” in English

biocidefalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

biocide is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈbaɪəʊsaɪd/. Rarity is why readers land here mid-draft. Gloss: "Any action or substance that can destroy living organisms.".

The misspelling generator found no plausible variants for biocide, since its letter sequence doesn't invite the usual edit-distance slips. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From bio- + -cide. The correct English form is biocide, spelled B-I-O-C-I-D-E.

Definition

  1. 1
    Any action or substance that can destroy living organisms.

Recorded use

Wiktionary example

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

  1. [T]here is the inability of the Christian world to respond in any effective way to the destruction of the planet. […] There is this terrible lack of concern for biocide or geocide. We have no moral principles to deal with them. […] Somehow, when I was quite young, I saw the beginning of biocide and geocide.

Etymology

From bio- + -cide.

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "biocide"?
"biocide" is spelled B-I-O-C-I-D-E. The IPA pronunciation is /ˈbaɪəʊsaɪd/.
What does "biocide" mean?
As a noun, "biocide" means: Any action or substance that can destroy living organisms.
How do you pronounce "biocide"?
The IPA (International Phonetic Alphabet) transcription for "biocide" is /ˈbaɪəʊsaɪd/. 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 "biocide"?
From bio- + -cide. 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.

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

Source: FrequencyWords open word-frequency list