ionic compoundnoun [ C ]
uk/aɪˌɒn.ɪk ˈkɒm.paʊnd//aɪˌɑː.nɪk ˈkɑːm.paʊnd/specializeda chemical compound with atoms that are held together by atomic bonds:
The formula of an ionic compound shows the simplest ratio of ions in the ionic lattice.
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