(physics, chemistry) A conservation law of classical physics that states that the total mass of a closed system remains constant regardless of the chemical or physical changes that take place within it.

(biology) Legal aspects of protection of biodiversity, the environment, and natural resources.

A political philosophy that stresses using traditionally Conservative techniques and concepts in order to improve the general welfare of society.

An activity to which all participants consent which is deemed to be illegal.

plural of consensual crime

(logic) A formal fallacy, committed by reasoning in the form: / If P, then Q. / Q. / Therefore, P.

plural of pang of conscience

(often in the plural) A feeling of shame, guilt, or embarrassment, resulting from behavior which one regrets.

To increase a person's awareness of, and often sympathy for, an issue, cause, or condition.

(Britain, politics) A member of the Conservative party.