tan

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|engineering}} {{init of|en|[[total]] [[acid]] [[number]]}}, the measure of a lubricant's or crude oil's acidity. See [[w:Total acid number|Total acid number]] on Wikipedia.
2. {{lb|en|banking}} {{init of|en|[[transaction]] [[authentication]] [[number]]}}, in electronic banking. See [[w:Transaction authentication number|Transaction authentication number]] on Wikipedia.

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