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Greek noun (masculine) · G2447

ἰός

iosee-os'

an arrow.; rust; poison

3 uses in the Greek text, one for each word STEP Bible has tagged with this key

Concordance spelling: iós

Word page · Part of the concordance, one page for every word of the Hebrew and Greek text. Strong's G2447is this word's number in James Strong's 1890 index of the King James Bible.

  • 2 of 27
    New Testament books
  • 2
    spellings
  • 3
    meanings

The definition in full

Strong's key (1890) · G2447

rust (as if emitted by metals); also venom (as emitted by serpents)

The King James renders it: poison, rust.

James Strong, The Exhaustive Concordance of the Bible (1890), public domain. Strong indexed the King James text, and this site quotes his entry as that index.

Summary

ios is rendered "an arrow.; rust; poison". It stands 3 times in the Greek text, across two books.

  • Two of the uses stand in James, more than in any other book.
  • The lexicon lists three meanings for it, beginning with "an arrow.".
  • Its first use in canonical order opens the ledger below.Romans 3:13“Their throats are open graves; their tongues practice deceit.” “The venom of vipers is on their lips.”
  • The Greek text spells it two different ways.

The first use

“Their throats are open graves; their tongues practice deceit.” “The venom of vipers is on their lips.”

Romans 3:13ἰὸς

The first use, in the order of the New Testament's books.

Where the word stands

Two of the word's three uses are in James.

The other 25 New Testament books never use the word.

What the word means

The lexicons give this word three senses, and a verse uses one of them at a time: an arrow., and rust, and poison.

Each meaning, and the words it is translated by

The English STEP Bible gives each use, word by word, and how many times.
an arrow.Tagged aslisted under the tableWhereRomans 3:13“Their throats are open graves; their tongues practice deceit…
rustTagged as
  • rust1
WhereJames 5:3Your gold and silver are corroded. Their corrosion will testify against you and consume your…
poisonfiguratively, Rom.3:13 (Ps. l.with), Jas.3:8.† (AS)Tagged as
  • of poison1
  • venom1
WhereRomans 3:13“Their throats are open graves; their tongues practice deceit…

The words built on the same word-part

Each word below begins with the same letters this one begins with. A shared word-part shows a family. It does not settle what any one of them means, so each word carries its own uses on its own page. Scholars call that shared part the stem.

All 3, in canonical order

Every use, in order

Every use, grouped by book, with its verse.

2 spellings and their grammar

STEP Bible tags every word of the Hebrew and Greek text with its spelling and its grammar. Both lists below count the rows printed underneath, written out in English, with the code beside each one as it was tagged.

How it is spelled

  • ἰὸς2
  • ἰοῦ1

The grammar of each form

  • noun · nominative (subject) · masculine singular2N-NSM
  • noun · genitive (“of”) · masculine singular1N-GSM

Romans

one use
  • “Their throats are open graves; their tongues practice deceit.” “The venom of vipers is on their lips.”

    Romans 3:13

    • ἰὸςiosnoun · nominative (subject) · masculine singulartagged: venom

James

two uses
  • but no man can tame the tongue. It is a restless evil, full of deadly poison.

    James 3:8

    • ἰοῦiounoun · genitive (“of”) · masculine singulartagged: of poison
  • Your gold and silver are corroded. Their corrosion will testify against you and consume your flesh like fire. You have hoarded treasure in the last days.

    James 5:3

    • ἰὸςiosnoun · nominative (subject) · masculine singulartagged: rust

Where it leads

How the numbers are counted

Every count on this page comes from STEP Bible's tagged Hebrew and Greek text, the same text the ledger prints. A use is counted once each time the tagging marks a word with this key.

Spellings are counted as the Greek text spells them, with the sentence's own punctuation taken off the word first, so a form that ends a clause is not counted as a second spelling.

Hebrew and Greek text, word tagging and grammar: STEP Bible (www.STEPBible.org), Tyndale House, CC BY 4.0. Their grammar codes are written out in English here and shown as tagged beside each one.

Meaning and senses: STEP Bible TBESG (Tyndale House, CC BY 4.0), the Brief lexicon based on Abbott-Smith (1922).

Dictionary key: Strong's Exhaustive Concordance of the Bible (1890, public domain). English verse text: Berean Standard Bible (public domain, 2023).

Revised 2026-09-05. Every cited work, the sources registry →