Final answer:
The prefix dis- in the word disinfectant means apart. It indicates a reversal or separation of the action represented by the root word. When used as a prefix, dis- generally implies negation or removal of the root meaning.
Step-by-step explanation:
The prefix dis- in the word disinfectant means apart. It indicates a reversal or separation of the action represented by the root word. In this case, 'infectant' refers to something that causes infection, and 'disinfectant' refers to something that counters or prevents infection. When used as a prefix, 'dis-' generally implies negation or removal of the root meaning.
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