She said, “Go to Learners Dictionary dot com [=the Web site www.learnersdictionary.com] for more information.”
She arrived at 3 o'clock 'on the dot'. = She arrived 'on the dot of' 3. [=she arrived exactly at 3 o'clock]
We need some extra time to 'dot the i's and cross the t's' on the report.
(..) too damaged for re-entry, but it's perfectly fine for a little Sunday drive. Sunday drive? Look to the west. You see that dot in the distance? That's a Chinese station. - Yes. You're gonna take the Soyuz, and you're gonna cruise over there. Chinese lifeboat is a Shenzhou. (..)2013 Gravity