The asterisk is the handy little star symbol* that we use to indicate that there is more information attached to something, to denote the existence of a footnote, to add emphasis to a word or point of notice, or to blank out letters in offensive words that we don’t want to type or write in full.
The word asterisk means ‘little star’ and has been used as a noun since the late 14th century— well before the invention of the printing press— while the verb form “to asterisk something” was first recorded in 1733.
Asterisk comes to use from Latin via Greek, but actually goes back to Proto-Indo-European roots, which is about as far back as any language or individual words can be traced. The PIE root *ster- is the source of the words for star in numerous languages including Hittite, Sanskrit, Greek, Latin and, thus, English.
Therefore, the word asterisk is related to asteroid, aster daisies, disaster, constellation and starfish, among others. It is also a cousin of names such as Esther, Estelle and Stella.**
More recently, the asterisk also inspired the name of Asterix, the hero of the classic comics by Goscinny and Uderzo. Those books are characteristically full of puns and word play, and the names of Asterix and Obelix are derived from mispronunciations of asterisk and obelisk respectively.
* located above the 8 on a keyboard
** They are not close cousins, but more like the kind who are jealous of each other because they all want to be the most popular starlet in the family, and only make small talk with one another at family reunions.
Source: Online Etymology Dictionary
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