A website is a presence on the World Wide Web. As of 2017, there are more than one billion. To qualify as a bona fide site, it must be available over the Internet around the clock.
Tube means a hollow cylinder. An example of a tube is manicotti pasta. The definition of a tube is a pliable container with a screw cap at one end to keep it closed. An example of tube is the container that toothpaste comes in.
pressure-equalization (PE) tube. Type:Term. Definitions. 1. a small cylindric device placed through an incision in the tympanic membrane to relieve problems of the middle ear, such as fluid accumulation or auris media infection caused by eustachian tube dysfunction.