noun
integration; mixing in; blending in
Refers to the state or process of becoming part of a group, environment, or substance. Often used in social contexts, but also for physical mixing or penetration.
新しい職場への溶け込みが早かった。
His integration into the new workplace was quick.
この絵の具は水への溶け込みが良い。
This paint mixes well with water.