Resembling or having characteristics of a base; chemically or structurally similar to a base.
From base (from Latin basis, meaning foundation, or from chemistry terminology for alkali compounds) + -like (Old English suffix meaning resembling). This descriptor emerged in modern chemistry vocabulary.
Baselike compounds in chemistry don't test the pH the way actual bases do, but they share enough structural features that chemists use the term to group similar molecules even if they're not officially bases by definition.
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