The verb embed means to implant something or someone — like to embed a stone into a garden pathway or to embed a journalist in a military unit.
When you stick something firmly within a particular environment, you are embedding it. If you are an archeologist, you might spend a lot of your time looking for pottery shards embedded in the earth. If you are a web site designer, you might embed video clips on web pages. And if your newspaper is covering a war overseas, you might consider embedding a journalist in a military troop in order to have a source reporting back from the front lines.