Phrase guide

filename extension

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

Synonym of file extension.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: file extension

Antonyms: none provided

2

noun

Meaning 2

a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename

Definition source: Princeton WordNet 3.0

Examples

  • most applications provide extensions for the files they create
  • most BASIC files use the filename extension .BAS

Meaning relationships

Synonyms: extension, file name extension

Antonyms: none provided

Broader terms: string

History

Etymology

No etymology was provided for this word.