Major Depressive Disorder: A severe mental illness characterized by feelings of hopelessness, helplessness, and worthlessness; often accompanied by suicidal thoughts and feeling of an inability to move.

 

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Major Depressive Disorder: A severe mental illness characterized by feelings of hopelessness, helplessness, and worthlessness; often accompanied by suicidal thoughts and feeling of an inability to move.

Personality Disorder: A deeply ingrained and maladjusted pattern of behavior that persists for many years. It is usually well established in later adolescence or early adulthood. The abnormality of behavior is se . . . View Full Definition

Polygenic Disorder: Genetic disorder resulting from the combined action of alleles of more than one gene (e.g., heart disease, diabetes, and some cancers). Although such disorders are inherited, they depend on . . . View Full Definition

Oppositional Defiant Disorder (ODD): A recurrent pattern of negative, defiant, disobedient and hostile behavior toward authority figures that persists for at least six months. This disorder is characterized by frequent occurren . . . View Full Definition

Polygenic Disorders: Genetic disorders resulting from the combined action of alleles of more than one gene (e.g., heart disease, diabetes, and some cancers). Although such disorders are inherited, they depend on . . . View Full Definition

Monogenic Disorder: A disorder caused by mutation of a single gene.

Major-Minor: A major is a student's chosen field of study. It usually requires the successful completion of a specified number of credit hours. A minor is designated as a specific number of credit hours . . . View Full Definition

Majority Shareholder: A shareholder who is part of a group that controls more than half the outstanding shares of a corporation.

Majority Voting: Voting system under which corporate shareholders vote for each director separately. Related: Cumulative voting.

Reactive Attachment Disorder: A condition with onset before age 5, resulting from an early lack of consistent care, characterized by a child's or infant's inability to make appropriate social contact with others. Symptom . . . View Full Definition