Athena prorogator

[R. Sale]

It means: "the opposite of" or "the contrary".

I can see where the Google word choice of "contrast" might not be entirely clear. However, if you enter "Das ist der Gegensatz von" - Google translates as "This is the opposite of".

The thing that is somewhat confusing is the parenthetical "(lat. prorogator)" at the end and whether it makes its reference to the first Greek word, or the second. The placement may be misleading, based on the definition of the second Greek word as "releaser".