a. An alteration of the form of a word by the addition of an affix, as in English dogs from dog, or by changing the form of a base, as in English spoke from speak, that indicates grammatical features such as number, person, mood, or tense.
Generic Estrace. As all of the patents for Estrace (estradiol) have expired, several companies have chosen to manufacture a generic version of the drug. The generic versions are sold in three strengths: estradiol 0.5 mg, estradiol 1 mg, and estradiol 2 mg.
Is Estradiol the Same as Generic Femring? No -- estradiol is the active ingredient in Femring, but it is not a generic version of it. What can be confusing is that, oftentimes, the active ingredient of a drug is referred to as the generic name.. The generic name is different from a generic version of a medicine.