a.m.
A1
used to refer to a time between twelve o'clock at night and twelve o'clock in the middle of the day
Dictionary examples:
My alarm rings at 1 a.m. (0.0)
The cat wants breakfast at 3 a.m. (0.0)
I drink coffee at 7 a.m. (0.0)
We're open between 9 a.m. and 5 p.m. daily. (17.4)
The first election results are expected around 1 a.m. (52.6)