iter

I1T1E1R1
/ˈaɪtə(ɹ)/

noun

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

OriginLatin iter →
Less commonScrabble 4
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Meanings

iter1

nouniter (plural iters)

plural iters

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

    This fluid passes through the main iters which connect the various ventricles and filters through the thin membranes of the brain and cord, equalizing the pressure at all points.

    1916, Mayo Clinic, Collected Papers of the Mayo Clinic and the Mayo Foundation, page 869

ITER2

proper noun

alternative Iter

  1. abbreviationacronymnuclear physicsAcronym of International Thermonuclear Experimental Reactor.

Origin

iter · noun

  1. Latiniter“passage”
  2. Englishiter

Borrowed from Latin iter (“passage”).

More words from Latin

Full word history & related roots →

ITER · proper noun

  1. Latiniter“way, path”
  2. EnglishITER

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

More words from Latin

Full word history & related roots →

Rhymes & wordplay

Anagrams

tiretierriteTerireittrie
Cite this entry
APA

iter. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/iter

MLA

“iter.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/iter. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “iter,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/iter.

Source: iter on Wiktionary, CC BY-SA 4.0.