When coacervation happens, two liquid phases will co-exist: a dense, polymer-rich phase (coacervate phase or coacervate droplets) and a very dilute, polymer-deficient phase (dilute phase). Coacervate droplets can measure from 1 to 100 micrometres across, while their soluble precursors[3][4] are typically on the order of less than 200 nm.[5] The name "coacervate" derives from the Latin coacervare, meaning "to assemble together or cluster".