Definition of "cardioid" []

• A heart-shaped plane curve, the locus of a fixed point on a circle that rolls on the circumference of another circle with the same radius. (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.

• "Do not use a omnidirectional mic or something like that, look up "cardioid" and make sure that's the type of mic you are using!"
• "† For my fellow audio engineering geeks out there, my brother held an Audio Technica Dual Reference cardioid mic directly at the sound hole on an X axis."
• "Tried the directional cardioid and the omnidirectional capsule settings, went with the omnidirectional."