Greek word
prothésmios
προθέσμιος
What it means
fixed beforehand, i.e. implied) a designated day
fixed beforehand, i.e. (feminine with hēméra (ἡμέρα) implied) a designated day
Where it comes from
from pró (πρό) and a derivative of títhēmi (τίθημι)
How the King James translates it
Every place it appears 1
Galatians4:2