meld

As a verb used when things are blending or being blended together, meld dates only to the first half of the 20th century. In its early days, the word attracted some unfavorable attention. Those who didn't like it tended to perceive it as a misuse of an older meld meaning "to declare or announce (a card or cards) for a score in a card game" (such as pinochle or gin rummy). But the more recent meld, a blend of melt and weld, was an entirely new coinage suggesting a smooth and thorough blending of two or more things into a single, homogeneous whole. The word is no longer controversial.