n. The effect of earthquake motion propagation being greater in the direction of the rupture
the GNU version of the Collaborative International Dictionary of English
n. the property of a microphone or antenna of being more sensitive to sounds coming from one direction than from another.
The Century Dictionary and Cyclopedia
n. The character of being directive.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the property of a microphone or antenna of being more sensitive in one direction than in another
n. the quality of being directive
Word Usage
"However, they typically do not have a flat frequency response, that is, the directivity pattern is narrowed at the cost of the quality of the recorded sound."