Quote:


meme -
noun


1. a cultural item that is transmitted by repetition and replication in a manner analogous to the biological transmission of genes.
b.a cultural item in the form of an image, video, phrase, etc., that is spread via the Internet and often altered in a creative or humorous way.


verb (used without object), memed, memeing or meming.


2. to create and spread memes:
He spends a lot of time memeing and sharing his videos with friends.


verb (used with object), memed, memeing or meming.


3. to make the subject of a meme:
cute cats that get memed.

origin of meme:

1976; < Greek m ī meîsthai ‘ to imitate, copy ’ ; coined by R. Dawkins, British biologist



Just refreshing myself on the definition. In layman's terms, I think of it as a resonant propaganda image.
I'd argue that it has to be persuasive, to the point that it becomes resonant for many people.
Or at least (in the example of memed kitty pictures) strikes a popular emotional chord.