io

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IO¹

noun IOs

  1. abbreviation, countable, initialism, uncountable Initialism of input and output
  2. abbreviation, countable, initialism, uncountable Initialism of indirect object
  3. abbreviation, countable, initialism, uncountable Initialism of intelligence officer
  4. abbreviation, countable, initialism, uncountable Initialism of incident officer
  5. Singapore, abbreviation, countable, initialism, uncountable Initialism of investigation officer
  6. abbreviation, countable, initialism, uncountable Initialism of international organization

adjective

  1. abbreviation Abbreviation of intraosseous

io²

  • /ˈaɪəʊ/

Rhymes with -aɪəʊ

Where it comes from

From New Latin, from Ancient Greek Ἰώ (Iṓ, “Io”).

noun ios

  1. A type of moth, the io moth. These lines appear to serve as roadways or guides to any stragglers that may have hung back for some reason known only to an io.

io³

Where it comes from

From Latin iō; compare Ancient Greek ἰώ (iṓ, “oh!”).

interjection

  1. rare An exclamation of joy or triumph. Do as thou wilt, as a great god can, O Pan! Io Pan! Io Pan! Io Pan Pan! I am awake In the grip of the snake.

Io⁴

  • /ˈaɪəʊ/ UK
  • /ˈaɪoʊ/ US

Rhymes with -aɪəʊ

Where it comes from

Borrowed from Latin Io, from Ancient Greek Ἰώ (Iṓ).

proper noun

  1. Greek The daughter of Inachus river god, and a lover of Zeus, turned by the latter into a heifer.
  2. A moon of Jupiter, known for its volcanic activity, peppered with about 400 active volcanoes. A mottled blanket of debris from many active volcanoes gives Io the youngest surface in the solar system.
  3. 85 Io, a main belt asteroid; the asteroid shares its name with the Jovian moon

Thesaurus

Closest in meaning: isbn, mpi, dep, fad, ident, icd, input, output, throughput, dataflow, read, write, transfer, transmission, traffic, communication

Translations

Every language

name mythology

EspañolÍo
한국어이오
日本語イーオー Īō
中文伊俄 Yī'é
PortuguêsIo
FrançaisIo
DeutschIo
ItalianoIo
ΕλληνικάΙώ Ió
RomânăIo
РусскийИо́ Ió

name moon of Jupiter

EspañolÍo
한국어이오
日本語イオ
中文木衛一 /木卫一 Mùwèiyī, 埃歐 /埃欧 Āi'ōu
PortuguêsIo
FrançaisIo
DeutschIo
ItalianoIo
ΕλληνικάΙώ Ió
РусскийИо́ Ió
العربيةآيُّو ʔāyyū

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Cite this
MLA

"io." Wiktionary, via Micwyn, micwyn.com/word/io. Accessed 6 Nov. 2026.

APA

io. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/io

Chicago

"io." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/io.

BibTeX
@misc{io_2026,
  title = {io},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/io},
  urldate = {2026-11-06}
}