506 words containing OB 15-letter words

Filter answers for the "ob" by length:
Section of a curve
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A
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R
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C
Hint 1 meaning
The apparent arc described, above or below the horizon, by the sun or other celestial body. The diurnal arc is described during the daytime, the nocturnal arc during the night.
Hint 2 anagram
ACR
Hint 3 another clue
AID WHEN GOING TO COURT
14 +1

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