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.
1 ESTRACE (estradiol vaginal cream, USP, 0.01%) should not be used in patients with known hypersensitivity to its ingredients.  Known or suspected pregnancy. There is no indication for ESTRACE (estradiol vaginal cream, USP, 0.01%) in pregnancy.