arcsine
noun
arc·sine (ˌ)ärk-ˈsīn 
variants or less commonly arc sine
plural arcsines also arc sines
: the inverse function of the sine
if y is the sine of θ, then θ is the arcsine of y
—abbreviation arcsin 
Word History
First Known Use
circa 1889, in the meaning defined above
- sluggardising
- sluggardized
- sluggardizes
- sluggardizing
- sluggardlinesses
- sluggardly
- sluggardness
- sluggardnesses
- sluggards
- slugged
- slugged (down)
- slugged down
- slugger
- sluggers
- slugging
- slugging (down)
- slugging average
- slugging down
- slugging match
- slugging percentage
- sluggish
- sluggisher
- sluggishest
- sluggishlier
- sluggishliest