by the day

one day at a time. I don't know when I'll have to leave town, so I rent this room by the day.

by the day

Also, by the hour or week or month or year . According to a specific time period, as in I'm renting this car by the day, or He's being paid by the hour. This usage generally describes some kind of rate. [1400s]

Common Names:

Name	Pronounced	Usage
Amram	AM-ram (English), ahm-RAHM (Hebrew)	Biblical, Biblical Latin, Biblical Hebrew
GlÁUcio	-	Portuguese
Erramun	-	Basque
Phyllis	['filis]
NadĚŽDa	-	Czech
Italo	-	Italian