â¢ SALTATION (noun) The noun SALTATION has 5 senses: 1. (geology) the leaping movement of sand or soil particles as they are transported in a fluid medium over an uneven surface. 2. a mutation that drastically changes the phenotype of an organism or species. 3. an abrupt transition.
A CAPTCHA as you may well know is one of those annoying âType in the letters you see in the image aboveâ things you see on many website signup pages or comment sections. A CAPTCHA image is designed so that a human can read it without difficulty while a computer is unable to.
CAPTCHA is an acronym from Carnegie Mellon University. It stands for Completely Automated Public Turing test to tell Computers and Humans Apart. This is a rather obnoxious acronym, but the term has become the standard moniker for these simple human-or-robot tests.