the quality of being perceivable by touch.
Asana and pranayama are all perceivable aspects of yoga practice but there are other layers which are not that obvious.
As a language learning method, scientific reading must follow the principles of language formation, developing and children's perceivable process.
Time, like air, is shapeless -- not perceivable. However, people mark it by the second, minute, hour, day, month and year, so that it becomes something that one can recall.
The more subtle and less easily perceivable its fragrance, the more noble the flower may be regarded.
Continuous availability demands that the database engine be available for processing with no perceivable downtime.