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.
Topical estrogen is available in several forms to fit your preferences: 1  A vaginal estrogen ring, such as Estring. 2  A vaginal estrogen cream, such as Premarin or Estrace. 3  A vaginal estrogen tablet, such as Vagifem, is inserted into the vagina using a disposable applicator.opical estrogen is available in several forms to fit your preferences: 1  A vaginal estrogen ring, such as Estring. 2  A vaginal estrogen cream, such as Premarin or Estrace. 3  A vaginal estrogen tablet, such as Vagifem, is inserted into the vagina using a disposable applicator.