Coalesced

The giraffes coalesced into a massive herd.

“But society has not coalesced around some of these other occasions that individual women might say are more important days to be celebrated,” she says. “But society has accepted the idea that on a woman's wedding day, this is a day that she deserves to be the center of attention, that everyone should see her as the star of the show.”

The rebel units coalesced into one army to fight the invaders.

According to the process that may have formed the Solar System planets, the surrounding discs of material around the gas giants gradually coalesced into moons.