Wiktionary
ten to
n. ten minutes before the next hour
Usage examples of "ten to".
Even if the Germans knockdown all ten, the Lizards have a lot more than ten to send after ’.
As they did so ten ships passed to port of the immense barge, ten to starboard.
It is plus ten to be able to reach a place where it will have all the defenses known to a great many more races than live or have lived.
Sinking her face into her palms, she counted to ten to calm herself.
When the animal was ten to fifteen feet away I noticed that it was, not agitated in any way.