Definition of "ray" []

• A thin line or narrow beam of light or other radiant energy. (noun)
• A graphic or other representation of such a line. (noun)
• Radiance; light. (noun)
• A small amount; a trace: not a ray of hope left. (noun)
• Mathematics A straight line extending from a point. Also called half-line. (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 term ray is a misnomer, as cosmic particles arrive individually, not in the form of a ray or beam of particles.""
• "The Blu-ray is gorgeous though, in widescreen (1.78: 1) and in DTS 5.1 HD, along with the original Dolby surround."
• "To Be or Not to Be on Blu-ray is widescreen (1.85: 1) with both DTS-HD 5.1 and the original 2.0 stereo audio."