Standard Lemma guide

iter

name · 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈaɪtə(ɹ)/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

name

Meaning 1

Acronym of International Thermonuclear Experimental Reactor.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, acronym, alt-of

Qualifier: nuclear physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A passage, especially the passage between the third and fourth ventricles in the brain; the cerebral aqueduct.

Definition source: English Wiktionary via Wiktextract

Usage: archaic

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

(experimental reactor): originally an acronym, now explained as derived from Latin iter (“way, path”).

Borrowed from Latin iter (“passage”).