In Latin, the three simple tenses: present, future, and imperfect, as contrasted with the perfect system, the three perfect tenses: perfect, future perfect, and pluperfect. Verbs in the present system tend to indicate an action that has not completed.

plural of central nervous system

plural of nervous system

plural of immune system

A hierarchy of values that all moral beings have, reflected in their choices. Most people's value systems differ. It's an individualistic concept. One's value system is molded by one's virtues or vices, and experiences.

(neuroanatomy) The part of the autonomic nervous system that raises blood pressure and heart rate, constricts blood vessels, and dilates the pupils when under stress.

A pushchair with detachable carrycot or car seat.

plural of travel system

plural of circulatory system

A group of related components that are part of a larger system.