Material called a growth medium is put on the joint to keep it from getting dry and to help the two plants grow together.

VOA: special.2010.05.18

"It is a great medium to reach people, people in academics started to understand the power of gaming."

VOA: standard.2010.04.20

He says his decision was guided in large part by new intelligence that shows Iran is focusing on the development of medium and short-range missiles.

VOA: standard.2009.09.17

That's a testament to how engaging movies are and the visual medium is.

VOA: standard.2010.07.16

Iran's military exercises, which started Sunday and have included test launches of short and medium-range missiles as well, come just days after the disclosure that Tehran is building a new uranium enrichment plant.

VOA: standard.2009.09.28

"But we also have to recognize that if markets are skittish and don't have confidence that we can tackle the tough problems of our medium- and long-term debt and deficits,then that also is going to undermine our recovery."

VOA: standard.2010.06.27