Ampersand

The ampersand (&), also referred to as the and sign, is a logogram (a diagram standing for a word).

It represents the Latin conjunction et, which means and. The ampersand symbol is not only a logogram, but also a ligature. It joins the old handwritten Latin letters e and t of the word et, so that the word is represented as a single glyph."The ampersand & more" with Kory Stamper, part of the "Ask the Editor" video series at Merriam-Webster.com

With a c added on it means "et cetera", "and so on".

In everyday writing, the ampersand is sometimes written like a reversed 3 with a vertical line through it.A Visual Guide to the Ampersand (Infographic)

 References 

Category:Typography
Category:Symbols
Category:Latin letters