Word.ws English Dictionary

oto

oto noun: an otocinclus (freshwater fish, genus Otocinclus).

Noun (1)

oto (plural otos)

  1. (informal) An otocinclus (freshwater fish, genus Otocinclus).
    • All the tetras in my tank (3 species - black neons, Pristellas, and red eyes) died within a 36 hour period. The corys and otos in the same tank are fine.
      There was no change in water quality, feeding habits, or water temperature. I have no idea why all the tets would die in such a short time span.1998 January 24, LASP, “Dead tetras”, in rec.aquaria.freshwater.misc (Usenet)

Proper noun (1) capitalized: Oto

Oto

  1. A city in Iowa.

Noun (2) capitalized: Oto

Oto pl (plural only)

  1. (plural, plural-only) A Midwestern Native American tribe who speak the Chiwere language.

Proper noun (2) capitalized: OTO

OTO

  1. (abbreviation, initialism) Initialism of Ordo Templi Orientis.

Forms of oto

pluralotos
alternative formOtoe

Origin of oto

Clipping of otocinclus.

Words formed from oto

  • dwarf oto
  • tiger oto
  • zebra oto

Questions about oto

What does oto mean?
Oto means an otocinclus (freshwater fish, genus Otocinclus).
What part of speech is oto?
Oto can be a noun or a proper noun.
What is the plural of oto?
The plural of oto is otos.

Words near oto in the dictionary

  1. otlum
  2. otlums
  3. OTM
  4. otmeal
  5. OTNE
  6. oto
  7. oto-
  8. Oto-Manguean
  9. Oto-Pamean
  10. otoacariasis
  11. otoacoustic

Source and license

Adapted from Wiktionary: oto (page history and authors); Oto (page history and authors); OTO (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “oto.” Word.ws, https://word.ws/oto. Based on Wiktionary, CC BY-SA 4.0.