( ( ( Dissociation - ) ( ( the separation ) ( of ( ions ( from ( ( a compound ) ( during solution ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NNP Dissociation)) (: -) (NP (NP (DT the) (NN separation)) (PP (IN of) (NP (NP (NNS ions)) (PP (IN from) (NP (NP (DT a) (NN compound)) (PP (IN during) (NP (NN solution)))))))) (. .)))
Dissociation - the separation of ions from a compound during solution.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (NN separation)) (PP (IN of) (NP (NP (NNS ions)) (SBAR (WHNP (WDT that)) (S (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (JJ solid) (JJ ionic) (NN compound)) (VP (VBZ dissolves) (NP (NN dissociation)))))))))))) (. .)))