Definitions
1.VerbTo join into a single mass or whole."The droplets coalesced into a puddle."
2.VerbTo form from different pieces or elements."The puddle coalesced from the droplets as they ran together."
3.VerbTo bond pieces of metal into a continuous whole by liquefying parts of each piece, bringing the liquids into contact, and allowing the combined liquid to solidify.
4.VerbTo merge, to intermingle freely.
5.VerbTo convert a null value to a defined value.