r/o

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Verb

1. {{lb|en|medicine}} {{initialism of|en|rule out}}: {{non-gloss|used to indicate that a certain possible diagnosis should be considered, and appropriate tests performed to rule it out.}}

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.