A duration is conceptually more similar to '2 hours' than to 'between 2 and 4 pm today'. How to use duration in a sentence. The COVID-19 pandemic arrived in Newfoundland shortly after we suffered through a “weather bomb” affectionately referred to as Snowmageddon. Durations do not have a defined beginning and end date. It first took on this meaning in 1780 when Pennsylvania abolished slavery. Forces only exist as a result of an interaction.. Download it once and read it on your Kindle device, PC, phones or tablets. The following is a guest post by Ty Strong.Ty noticed a curious lack of information on the