Final answer:
The term "kuriake hemera" or "day of the lord" most likely refers to the Sabbath.
Step-by-step explanation:
The term kuriake hemera or "day of the lord" probably means Sabbath, according to the professor. The Sabbath is the seventh day of the week and is considered holy in Abrahamic religions, including Judaism and Christianity. In the Old Testament, the term "day of the LORD" is often associated with a day of divine judgment and intervention. Therefore, it is likely that the term "day of the lord" refers to the Sabbath.