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"determination" is also used as a crossword clue. If that's what you saw, the answer is often grit (4 letters).
Definitions
the act of determining the properties of something, usually by research or calculation
Word origin
From Middle English determinacion, determynacioun, from Old French determinacion, from Latin dēterminātiō. Morphologically determine + -ation.
Used in a sentence
“the determination of the wavelength of light”
“the determination of the level of salt in sea water”
“the determination of the oxygen in the air”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Firm resolve”13 letters
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