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The Historic Faith
Strong's Concordance
Greek Word Study

Strong's G2728 κατιόω (katioo)

Katioo means “canker” — full meaning, definition, and every linked Bible usage across the indexed canon.

Same number, other testament: Strong's H2728 — charegol (“beetle”) in the Hebrew Bible.

First usage Interlinear Bible Septuagint Bible
Strong's Number G2728
Language Greek
Linked Usages 2
Books 2

Strong's G2728 Quick Answer

Strong's G2728 κατιόω (katioo) is a Greek Strong's word-study entry. katioo (kat-ee-oh'-o) v. 1. to rust down, i.e. corrode [from G2596 and a derivative of G2447] It has 2 linked Bible usages across 2 books. Visible English usage signals include rust. Indexed coverage on this page includes New Testament and Deuterocanonical / Apocrypha.

Meaning
katioo (kat-ee-oh'-o) v. 1. to rust down, i.e. corrode [from G2596 and a derivative of G2447]
Usage
2 linked usages
Books
2 indexed books
Corpus
New Testament and Deuterocanonical / Apocrypha
Usage Words
rust

Meaning and Definition

katioo (kat-ee-oh'-o) v. 1. to rust down, i.e. corrode [from G2596 and a derivative of G2447] KJV: canker Root(s): G2596, G2447

Original Word
κατιόω
Transliteration
katioo
Derivation
Root: ἰός R1: 2596 R2: 2447
Morphology
verb

Across Lexicons

How independent scholarly lexicons define Strong's G2728. Each definition is shown with its source so you can compare and cite the original reference works.

Extended Strong's Greek Lexicon (Abbott-Smith based)

to corrode

Usage: κατ-ιόω, -ῶ (intensive of ἰόω; ἰός) [in LXX: Sir.12:11 * ;] to rust over; pass., become rusted over: Jas.5:3.† (AS)

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How Strong's G2728 Is Translated

The English word each shown verse actually uses to render katioo, taken from the interlinear word alignment (the same word underlined in the excerpts below). Where a rendering is used more than once, the count is shown.

rust James 5:3

How Strong's G2728 Usage Compares

Indexed coverage includes New Testament and Deuterocanonical / Apocrypha. Each section below keeps corpus counts and sample passages visible so readers can compare the word across contexts instead of reading one flat concordance list.

  • The largest indexed corpus on this page is New Testament with 1 linked usage.
  • Deuterocanonical / Apocrypha rows are counted separately so readers can decide how those texts relate to the main word study.

In the Septuagint (LXX)

Strong's G2728 (κατιόω) appears 1 time in the Greek Septuagint — the Old Testament the New Testament authors quoted.

Sample Septuagint occurrences:

Read the full Greek Septuagint interlinear with Strong's →

Strong's G2728 by Corpus

Indexed usage grouped by testament and extended corpus so readers can compare this word across the Bible, Septuagint, deuterocanonical books, and 1 Enoch where present.

Strong's G2728 in the New Testament

1 indexed usage in New Testament.

James 5:3 KJV

Your gold and silver is cankered; and the rust of them shall be a witness against you, and shall eat your flesh as it were fire. Ye have heaped treasure together for the last days.

Strong's G2728 in the deuterocanonical books / Apocrypha

1 indexed usage in Deuterocanonical / Apocrypha.

Wisdom of Sirach 12:11 Septuagint / Brenton

Though he humble himself, and go crouching, Yet take good heed and beware of him, And thou shalt be unto him as if thou hadst wiped a looking glass, And thou shalt know that his rust hath not been altogether wiped away.

Usage Excerpts

First 2 linked usage excerpts for Strong's G2728.

James 5:3 New Testament, KJV
Your gold and silver is cankered; and the rust of them shall be a witness against you, and shall eat your flesh as it were fire. Ye have heaped treasure together for the last days.
Wisdom of Sirach 12:11 Deuterocanonical / Apocrypha, Septuagint / Brenton
Though he humble himself, and go crouching, Yet take good heed and beware of him, And thou shalt be unto him as if thou hadst wiped a looking glass, And thou shalt know that his rust hath not been altogether wiped away.

All Indexed Usage Links

Every indexed verse link for Strong's G2728, grouped by book.

James 1 usage, New Testament
James 5:3
Wisdom of Sirach 1 usage, Deuterocanonical / Apocrypha
Wisdom of Sirach 12:11

Strong's G2728 FAQ

What does katioo (κατιόω) mean?

Katioo (Strong's G2728) is a Greek word most simply glossed "canker". katioo (kat-ee-oh'-o) v. 1. to rust down, i.e. corrode [from G2596 and a derivative of G2447]

How many times is katioo (κατιόω) used in the Bible?

This page currently indexes 2 linked usages for Strong's G2728 across 2 books.

Where can I study katioo (κατιόω) in context?

Use the linked verse references on this page to study Strong's G2728 in context. The indexed coverage includes New Testament and Deuterocanonical / Apocrypha.

What English words translate katioo (κατιόω)?

The visible usage excerpts most often surface English words such as rust. These are scanning signals from the displayed verses, not replacements for the original-language definition.

Does Strong's G2728 appear in the Septuagint or deuterocanonical books?

Yes. The current local index includes 1 in Deuterocanonical / Apocrypha for Strong's G2728, with linked reader references where each row is available.