If you have allergies, pregnancy can make your symptoms worse. But you're right to worry about taking allergy medicine during pregnancy. Pregnant women shouldn't take some allergy drugs. Certain antihistamines, however, are safe.
free radical. (chemistry). An atom or a diatomic or polyatomic molecule which possesses one unpaired electron. Also known as a radical.ree radical. in chemistry, a molecule or atom that contains an unpaired electron but is neither positively nor negatively charged. Free radicals are usually highly reactive and unstable.
Radical is derived from the Latin word radix meaning root, referring to the need for perpetual re-orientation towards the root truths of Christian discipleship. Radical discipleship also refers to the Anabaptist Reformation movement beginning in Zurich, Switzerland in 1527.