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A relict is a surviving remnant of a natural phenomenon. * In biology a ''relict'' (or relic) is an organism that at an earlier time was abundant in a large area but now occurs at only one or a few small areas. * In ecology, an ecosystem which originally ranged over a large expanse, but is now narrowly confined, may be termed a ''relict''. * In geology, the term ''relict'' refers to structures or minerals from a parent rock that did not undergo metamorphosis when the surrounding rock did, or to rock that survived a destructive geologic process. * In agronomy, a ''relict crop'' is a crop which was previously grown extensively, but is now only used in one limited region, or a small number of isolated regions. * In history (as revealed in DNA testing), a ''relict population'' refers to an ancient people in an area who have been largely supplanted by a later group of migrants and their descendants. * In real estate law, ''reliction'' is the gradual recession of water from its usual high-water mark so that the newly uncovered land becomes the property of the adjoining riparian property owner. Other uses: *In addition, relict was an ancient term still used in colonial (British) America and England of that era, now archaic, for a widow. It came to be a generic or collective term for widows and widowers. * In historical linguistics, a ''relict'' is a word that is a survivor of a form or forms that are otherwise archaic. ==Biology== (詳細はウィキペディア（Wikipedia）』 ■ウィキペディアで「relict」の詳細全文を読む スポンサード リンク
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