evergreen

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Related to Leaf persistence: Evergreen plants, Evergreen tree

evergreen,

term commonly used as synonymous with coniferconifer
[Lat.,=cone-bearing], tree or shrub of the order Coniferales, e.g., the pine, monkey-puzzle tree, cypress, and sequoia. Most conifers bear cones and most are evergreens, though a few, such as the larch, are deciduous.
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 and applied also to all those broad-leaved plants that bear green leaves throughout the year. Of the latter, most are plants of the tropics, subtropics, and other areas where the growing season is prolonged (e.g., New Zealand and the Pacific Northwest of the United States). In colder climates various broad-leaved shrubs (e.g., box, holly, and members of the heath family) are evergreen. Some broadleaf evergreens shed all their leaves for a brief period; the rest lose them continually, producing new leaves as the old ones fall. The term "half-evergreen" is used for deciduous plants with relatively persistent leaves.
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What does it mean when you dream about evergreens? (plant)

Evergreen plants, such as pine trees, traditionally represent immortality because they do not shed their leaves, even in the dead of winter. They also symbolize hope in the midst of despair for the same reason. Because of their association with Christmas, evergreens also symbolize gift-giving.

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evergreen

[′ev·ər‚grēn]
(botany)
Pertaining to a perennially green plant. Also known as aiophyllous.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

evergreen

Said of a plant or tree that retains its verdure through all the seasons, as the pine and other coniferous trees, the holly, rhododendron, etc.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

evergreen

(of certain trees and shrubs) bearing foliage throughout the year; continually shedding and replacing leaves
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005