LAT

Lewis Short

sēmĭ-hōra (noun F) :
* A half-hour, half an hour, Cic. Rab. Perd. 2, 6; Cels. 3, 21; Petr. 69, 4; Auct. B. Afr. 38.
Charlton T. Lewis, Charles Short, A Latin Dictionary
memory