Princeton's WordNet(2.25 / 8 votes)Rate this definition: 1  contract(noun) a binding agreement between two or more persons that is enforceable by law. 2  contract, declaration(noun) (contract bridge) the highest bid becomes the contract setting the number of tricks that the bidder must make.
View full size image. Until 2013, the oldest individual tree in the world was Methuselah, a 4,845-year-old Great Basin bristlecone pine (Pinus longaeva) in the White Mountains of California.nd on the other side of the world, in an Andes Mountains grove in Chile, we have a 3,642-year-old Patagonian cypress (Fitzroya cupressoides). The ancient specimen, which is sometimes called the Alerce (alerce is a common Spanish name for F. cupressoides), is the third-oldest tree to have its exact age calculated.
A clonal colony can survive for much longer than an individual tree. A colony of 47,000 quaking aspen trees (nicknamed  Pando ), covering 106 acres (43 ha) in the Fishlake National Forest of Utah, is considered one of the oldest and largest organisms in the world.ando, an 80,000-year-old colony of quaking aspen, is the oldest known clonal tree, located in Utah, United States. This is a list of the oldest known trees, as reported in reliable sources.