Definitions - q

Quadrat

A small area set aside for ecological study.

Search the Web for Quadrat
Quartz

A hexagonally latticed silicon dioxide mineral. A chief component of sand and therefore sandstone. It is the second most abundant mineral after feldspar and is common in continental crust but rarer in oceanic crust.

Search the Web for Quartz
Quaternary Sector
That portion of a region's economy devoted to informational and idea-generating activities (e.g., basic research, universities and colleges, and news media).

Search the Web for Quaternary Sector

Click on a letter to see all the terms and definitions that begin with that letter.

A free Android app containing all these definitions is now available, called the Green Dictionary. Click here to see the entry on the Android market; or click here if on an Android phone.