12-Letter Words Containing: O,R,O,O,N,S,_,_

• a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun

• the male reproductive cell; the male gamete

• someone who monopolizes the means of producing or selling something

• the craft of a carpenter: making things out of wood

• a slender tubular instrument used to examine the bronchial tubes

• a floating or swimming oceanic colony of polyps often transparent or showily colored

• a person who is completely color-blind