Made up word: emoticon consists of two words » emotion (n.) + icon (n., Synonyms: feeling, sensation, sentiment, agitation, excitement)
The emoticon celebrates its 30th birthday »
The emoticon, used to illustrate an emotion using an icon, celebrates its 30th birthday this month. […] On September 19 1982 Professor Scott Fahlman of Carnegie Mellon University in Pittsburgh sent an email that included the first use of the sideways smiley face. […] “I propose the following character sequence for joke markers: :-) Read it sideways.” […] The aim, according to Professor Fahlman, was to differentiate between those emails that were meant to be humorous and those that were not meant to be.