What is "anhedral"

a. (context mineralogy English) Lacking sharp, recognisable crystal faces. n. (context aeronautics English) the downward slope of an aircraft’s wing

The term "Anhedral" may refer to:

• Anhedral angle, the downward angle from horizontal of the wings or tailplane of a fixed-wing aircraft
• Anhedral (petrology), a rock texture without crystal faces or cross-section shape in thin section