the ability to perceive spatial orientation accurately (left to right)

The ability to distinguish left from right, up from down.

the ability to perceive spatial orientation accurately, directional orientation. djembe -an African hand drum.

The angle at which a speaker disperses sound. Higher frequencies are narrower than lower frequencies. Tweeters are more directional than woofers.

The tendency in some loudspeakers to beam sound like a laser rather than radiate it equally in all directions. Horn, ribbon and electrostatic speakers tend to be more directional at high frequencies than well designed dome moving coil tweeters, a factor that in extreme situations can impose restrictions on listening and speaker position.

the property of a microphone or antenna of being more sensitive to signal arriving from one direction than from another.

Information about the size, range and area in which a microphone optimally functions. In other words, the way the mic reacts to sound waves coming from different directions. The appearance of this pattern depends on the construction of the microphone. One can distinguish between different types of microphones based on their pick-up pattern. For instance, an omni-directional mic has a circular field, whereas a hyper cardioid mic's pattern looks a bit like an 8 with its bottom half almost completely deflated.

the property of a microphone or antenna of being more sensitive in one direction than in another

A concept related to "drift," it is the eventual "goal" of the language changes that occur in a system. For example, Sapir isolated an incidence of drift in the English case marking system, in which the complicated system of Old English inflectional morphemes was gradually phases out of the language. In this case, the leveling of case marking in English was the direction.

Directionality, in molecular biology, refers to the end-to-end chemical orientation of a single strand of nucleic acid. The chemical convention of naming carbon atoms in the nucleotide sugar-ring numerically gives rise to a 3' end and a 5' end. The relative positions of structures along a strand of nucleic acid, including genes, transcription factors, and polymerases are usually noted as being either upstream (towards the 5' end) or downstream (towards the 3' end).

Projecting of all directions from the body into space.