Is it possible to embed partials in markdown?

Fairly new to all this and digging in. It seems that within templates it’s possible to pull in partials, but I can’t seem to find a way to do this within the content files? What’s the recommended way to handle duplicate content? It would be handy to be able to reference another content file and pull it in, like a partial.

Is this currently possible and I’m just not finding it?

Thanks!