1) Growing together, fusing 
[computer science] In computer science, coalescing is the act of merging two adjacent free blocks of memory. When an application frees memory, gaps can fall in the memory segment that the application uses. Among other techniques, coalescing is used to reduce external fragmentation, but is not totally effective. Coalescing can be done as soo...
• (p. pr. & vb. n.) of Coalesce
The settling or drying of an emulsion paint as the water evaporates.
The settling or drying of an emulsion paint as the water evaporates.
coming together and uniting into one substance 
The settling or drying of an emulsion paint as the water evaporates.