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Definition mass in British English

mass verb

[intransitive] verb
/mæs/
1

to come together and form a large group

Example

Troops are massing along the southern border.

Synonyms and related words
1.1

to bring people together and make them form a large group

Example

More than 5,000 police were massed within two days.

Synonyms and related words
Definition mass in British English