psi

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{init of|en|[[pre-]][[sentence]] [[investigation]]}}.
2. {{init of|en|[[protein]] [[structure]] [[initiative]]}}.
3. {{init of|en|[[pollutant]] [[safety]]/[[standard]] [[index]]}} (measurement of the [[air pollutant]] such as [[haze]]).

Proper noun

1. {{lb|en|UK politics}} {{init of|en|w:Policy Studies Institute}}, a British [[think tank]].

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