Hello, you have come here looking for the meaning of the word diphenhydramine. In DICTIOUS you will not only get to know all the dictionary meanings for the word diphenhydramine, but we will also tell you about its etymology, its characteristics and you will know how to say diphenhydramine in singular and plural. Everything you need to know about the word diphenhydramine you have here. The definition of the word diphenhydramine will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofdiphenhydramine, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.