Inflected forms: co·a·lesced, co·a·lesc·ing, co·a·lesc·es 1. To grow together; fuse. 2. To come together so as to form one whole; unite: The rebel units coalesced into one army to fight the invaders. See synonyms at mix.
ETYMOLOGY:
Latin coalscere : co-, co- + alscere, to grow, inchoative of alere, to nourish; see al-2 in Appendix I.