OWordNet Explorer

the blood group whose red cells carry neither the A nor B antigens

human blood cells (usually just the red blood cells) that have the same antigens

the 15th letter of the Roman alphabet

the conventional characters of the alphabet used to represent speech

the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe

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

any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely