- present participle of mass.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Many of the fishing boats involved in the December and January massing events were likely part of China's maritime militia, some experts said.
From Barron's • Mar. 13, 2026
One day in December, Nat notices gulls, crows, starlings and wrens massing menacingly overhead.
From The Wall Street Journal • Oct. 24, 2025
A Home Depot in Paramount became a flash point after border patrol agents began massing there early on June 7.
From Los Angeles Times • Jun. 15, 2025
Between 10,000 and 12,000 tourists used to visit the Trevi Fountain each day, but a new queuing system has been installed to prevent large crowds massing near the landmark.
From BBC • Dec. 22, 2024
Both Riverrun and easterly Rock had called their banners, and armies were massing in the pass below the Golden Tooth.
From "A Game of Thrones" by George R.R. Martin
![]()