TNO

T1N1O1

A form of trans-Neptunian object — Any natural object (usually a minor planet (asteroid) or a hypothetical planet) in the Solar System with all or most of its orbit outside the orbit of Neptune.

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Meanings

nounTNO (plural TNOs)

plural TNOs

  1. abbreviationinitialismastronomyInitialism of trans-Neptunian object.

Rhymes & wordplay

Anagrams

nottonNTO
Cite this entry
APA

TNO. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/TNO

MLA

“TNO.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/TNO. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “TNO,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/TNO.

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