And so on: used to note that the rest of a list or piece of information has been left out on the assumption that it is similar or already known.

Initialism of electronic toll collection system.

(railways, transport) Initialism of European Train Control System (a signalling, control and train protection system, especially for high-speed lines.)

(finance) Acronym of Exchange-Traded Commodity. / (wireless location) Acronym of Electronic Toll Collection (system to eliminate delays on toll roads by collecting them electronically)

Alternative form of etc.

To cut into a surface with an acid or other corrosive substance in order to make a pattern. Best known as a technique for creating printing plates, but also used for decoration on metal, and, in modern industry, to make circuit boards.

(uncountable) The art of producing an image from a metal plate into which an image or text has been etched with acid. / (countable) The image created by this process.

present participle of etch

a needle-sharp steel tool for incising into plates in etching and the production of dry points.

Cut or dug into the surface as by etching. / (of a muscle, body part or person) Toned and with a well-defined musculature.