Relating to moral principles or the branch of knowledge dealing with moral principles.

Capable of feeling or perceiving things.

Showing an ability to understand and share the feelings of others.

Open and easily understood; not secretive or hidden.

Make less severe, serious, or painful.

Progress or improvement in development or knowledge.

Measures taken to protect or prevent something undesirable.

Relating to medical procedures or treatments that involve the introduction of instruments or substances into the body.

The study of ethical issues arising from advances in biology and medicine, especially those concerning the use of animals in research.