Coalesce

Harold was dressed in a suit and a tie, his hair was neatly combed, and he was standing halfway up the middle aisle. Once Glen had said he thought the opposition might coalesce around Harold. But so soon?

It would die with his death; the Galaxy would be left where it was before he came, except that there would no longer be Foundations around which a real and healthy Second Empire could coalesce.

Fist-sized bubbles of steam coalesce amid its fractal tracery of hot vanes and pummel the surface of the ocean, ceaselessly, all day and all night.

The women's heads coalesce.