Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
Within this category: liquid oxygen
How to sign: the blood group whose red cells carry neither the A nor B antigens
"people with type O blood are universal donors";