coalesce (v.) Look up coalesce at Dictionary.com
1540s, from Latin coalescere "unite, grow together, become one in growth," from com- "together" (see co-) + alescere "be nourished," hence, "increase, grow up," inchoative of alere "to suckle, nourish," from PIE root *al- (3) "to grow, nourish" (see old). Related: Coalesced; coalescing; coalescence; coalescent.