arc second
or arc-sec·ond
noun
Astronomy. second2(def 4).
QUIZZES
TAKE ROUND 2 OF OUR PSAT VOCABULARY QUIZ!
Here is our second set of teacher-selected PSAT vocabulary words. Do you know the meanings of these terms?
Question 1 of 10
advocate
Words nearby arc second
arc lamp, arc light, arc of lowitz, arc sec, arc secant, arc second, arc sine, arc spectrum, arc tan, arc tangent, arc welding
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020