|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a gadget; dingus; thingumbob.|
|Agassiz (āg'ə-sē) Pronunciation Key
Swiss-born American naturalist whose studies of glaciers and their movement introduced the idea of the ice age in 1840. Agassiz later revolutionized science education in the United States by emphasizing direct observation of the natural environment.