n. A measure of the extent to which something is directional
the GNU version of the Collaborative International Dictionary of English
n. the property of a microphone or antenna of being more sensitive to signal arriving from one direction than from another.
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 property of being directional or maintaining a direction
Word Usage
"And she felt that intervals had properties, and that numbers had "directionality" - that the interval between 2 and 1 is not the same as the interval between 1 and 2."