en masse 一起，全体 UK /ˌɒ̃ ˈmæs/; US /ˌɑ̃ː ˈmæs/ If a group | Desvl English Tips

en masse 一起，全体
UK /ˌɒ̃ ˈmæs/; US /ˌɑ̃ː ˈmæs/
If a group of people do something en masse, they do it together and at the same time
e.g. However, he did not think of them as belonging en masse to one space.
借自法语，意思是in a mass.