Definition of "ventricle" []

• A small cavity or chamber within a body or organ, especially: (noun)
• The chamber on the left side of the heart that receives arterial blood from the left atrium and contracts to force it into the aorta. (noun)
• The chamber on the right side of the heart that receives venous blood from the right atrium and forces it into the pulmonary artery. (noun)
• Any of the interconnecting cavities of the brain. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The left ventricle is built stronger than the right ventricle, because it has to work harder."
• "Approximately 3,000 children are born in the United States each year with severe heart defects in which one ventricle is too small or weak to pump effectively."
• "A surgical procedure performed to repair heart defects in which only one ventricle is functional."