Final answer:
The type of word that is most likely to be found in the dictionary definition of deduce is a verb.
Step-by-step explanation:
The type of word that is most likely to be found in the dictionary definition of deduce is a verb. A verb is a word that describes an action, occurrence, or state of being. In the case of deduce, it is a verb that means to reach a conclusion or inference based on reasoning or evidence.