The word "巳时" is formed by combining the character "巳", which is the sixth Earthly Branch in the traditional Chinese system, representing the two-hour period from 9 a.m. to 11 a.m., with the character "时", meaning "time" or "hour". This combination creates a compound term where "巳" specifies the designated time segment and "时" indicates it is a period of time, thus "巳时" literally denotes "the hour of 巳" and refers precisely to that morning interval.