This term is used especially for plants like herbs that produce new growth year after year from the same root structure.

VOA: special.2009.07.21

Walter Trifari says the root beer brings back memories for a lot of people who take tours of the brewery.

VOA: special.2011.08.01

For his mathematical project, he compared two ways to estimate the square root of an integer, a number with no fractional parts.

VOA: special.2011.03.24

Pakistan is an ally in the U.S.-led war against terrorism and has been under pressure from Washington to intensify efforts to root out extremists blamed for launching attacks on coalition forces across the border in Afghanistan.

VOA: standard.2009.12.11

"You are going to see an uplift of forces come in and I think you'll start to see this tightening ring of security in and around Kandahar city that I think will then provide the security bubble for governance to start to take in and development to start to take root in Kandahar city."

VOA: standard.2010.05.26

Smith says American academicians and journalists often cite a list of root causes for Middle East turmoil, in which the U.S., the West and Israel usually play a big part: a history of colonialism and economic exploitation, the creation of Israel and American support for the Jewish state, the politics of oil, Western backing of repressive Arab regimes and the U.S.military presence in the region.

VOA: standard.2010.03.18