TAN
noun
Elementary
1
Initialism of total acid number, the measure of a lubricant's or crude oil's acidity. See Total acid number on Wikipedia.
2
Initialism of transaction authentication number, in electronic banking. See Transaction authentication number on Wikipedia.
Sound Patterns & Rhymes
Alliteration
Words starting with the same consonant sound — used in poetry and prose to create rhythm, emphasis, and memorable phrasing (e.g. “Peter Piper picked”)
Assonance
Words sharing similar vowel sounds regardless of starting letter — creates internal melody in writing
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