the condition of being ignorant; the want of knowledge in general, or in relation to a particular subject; the state of being uneducated or uninformed. Ignorance (noun). a willful neglect or refusal to acquire knowledge which one may acquire and it is his duty to have. Origin: [F., fr.
Monoamine oxidase inhibitors (MAOIs) are a class of medication used to treat depression. They were introduced in the 1950s as the first drugs for depression. Today, theyâre less popular than other depression medications, but some people benefit from their use.
MAOIs were the first type of antidepressant developed, and became widely used in the 1950s. A monoamine oxidase inhibitor, or MAOI, is a type of antidepressant drug. MAOIs balance the level of certain chemicals in the brain by inhibiting the enzyme known as monoamine oxidase. MAOIs were the first type of antidepressant developed, and became widely used in the 1950s. A monoamine oxidase inhibitor, or MAOI, is a type of antidepressant drug. In addition to treating depression, MAOIs are sometimes used to treat such conditions as: 1  Bipolar disorder.  Panic disorder.