TRAZODONE EXTENDED-RELEASE-ORAL. The medication you searched for has more than one listing. Multiple listings, which are compiled by generic name indicate a drug is available in more than one dose or in different forms, such as tablets, liquid or injection.
In modern usage, a definition is something, typically expressed in words, that attaches a meaning to a word or group of words. The word or group of words that is to be defined is called the definiendum, and the word, group of words, or action that defines it is called the definiens.
A noun is a word for a person, place, or thing. (You might like to think of nouns as naming words.) Everything we can see or talk about is represented by a word that names it. That naming word is called a noun. Often a noun will be the name for something we can touch (e.g., lion, cake, computer), but sometimes a noun will be the name for something we cannot touch (e.g., bravery, mile, joy). Everything is represented by a word that lets us talk about it.