A bacterium which causes plague. Organism of Oriental plague, carried by rats, and thence transferred to man by bite of...

Flexible cartilage, e.g. in the ear and epiglottis.  

An old name for severe damage to the liver.  

Of a colour like that of the sun or of gold.  

The act of opening the mouth wide without conscious control and slowly releasing a deep breath, usually a sign of...

A reflex action when tired or sleepy, in which the mouth is opened wide and after a deep intake of...

Rapid and continuous movement.  

A general concept referring to the tendency of the young to assert their independence from their parents and to form...

A theory of color vision that assumes three types of cones, usually assumed to be maximally responsive to red, green,...

That segment of the life cycle from ages 18 to 22.