Crown — In dentistry, the portion of the tooth that is covered by enamel. Also a type of restoration that covers all or most of the natural tooth. * * * 1. Any structure, normal or pathologic, resembling or suggesting a c. or a wreath. 2. In dentistry,… … Medical dictionary
Crown (botany) — Tree crown The crown of a plant refers to the totality of the plant s aboveground parts, including stems, leaves, and reproductive structures. A plant canopy consists of one or more plant crowns growing in a given area. The crown of a woody pl … Wikipedia
plant disease — ▪ plant pathology Introduction an impairment of the normal state of a plant that interrupts or modifies its vital functions. All species of plants, wild and cultivated alike, are subject to disease. Although each species is… … Universalium
tree — treelike, adj. /tree/, n., v., treed, treeing. n. 1. a plant having a permanently woody main stem or trunk, ordinarily growing to a considerable height, and usually developing branches at some distance from the ground. 2. any of various shrubs,… … Universalium
Tree — /tree/, n. Sir Herbert Beerbohm /bear bohm/, (Herbert Beerbohm), 1853 1917, English actor and theater manager; brother of Max Beerbohm. * * * I Woody perennial plant. Most trees have a single self supporting trunk containing woody tissues, and in … Universalium
primate — primatal, adj., n. primatial /pruy may sheuhl/, primatical /pruy mat i keuhl/, adj. /pruy mayt/ or, esp. for 1, /pruy mit/, n. 1. Eccles. an archbishop or bishop ranking first among the bishops of a province or country. 2. any of various… … Universalium
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
Ecology — For other uses, see Ecology (disambiguation). Ecology … Wikipedia
On Vision and Colors — (German: Über das Sehn und die Farben) is a treatise[1] by Arthur Schopenhauer that was published in May 1816 when the author was 28 years old. Schopenhauer had extensively discussed with Johann Wolfgang von Goethe about the poet s Theory of… … Wikipedia
digestive system, human — Introduction the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… … Universalium