A meme is a _self-propagating_ unit of information. Like a gene. Tangent: I would call a datum the basic unit of information. Not sure if there's an official w

A meme is a _self-propagating_ unit of information. Like a gene. Tangent: I would call a datum the basic unit of information. Not sure if there's an official word, given the prevalence of the Wikipedia article for unit of (digital) information in every relevant search.