单词	heartwood
释义	heartwood noun heart·​wood ˈhärt-ˌwu̇d  : the older harder nonliving central wood of trees that is usually darker, denser, less permeable, and more durable than the surrounding sapwood Example Sentences Recent Examples on the Web Houses have worn many species of wood over the years, but the two main types of wood siding are red and white cedar, both of which are naturally rot-resistant due to the fragrant tannic acids found in their heartwood. Jon Gorey, BostonGlobe.com, 17 July 2022 But it’s not the leaves or flowers that make sandalwood so prized – it’s the aromatic heartwood. Katie Chang, Forbes, 24 Apr. 2022 If an affected tree is cut down, the heartwood is darker in color than surrounding wood, thus the name wetwood. oregonlive, 13 Mar. 2022 Though dozens of mills have closed over the decades, trucks still hurtle down Highway 20 carrying stacks of hulking redwoods, easy to distinguish by their crimson heartwood. Los Angeles Times, 19 Feb. 2022 When building a planter, choose one of the all-heartwood grades. Popular Mechanics Editors, Popular Mechanics, 29 May 2021 From the dark heartwood to the light edges, the elegance is in the grain. Judy Rose, Detroit Free Press, 24 July 2021 Oudh is an oleoresin, born out of a fungal attack upon the heartwood of a perfectly ordinary slim-limbed tree, native to South and Southeast Asia, known as Aquilaria malaccensis. New York Times, 10 May 2021 An old log lay on the angle of repose, poised to roll over broken stones, and chunks of heartwood were newly exposed, beetles and ants flowing in lines with white fungi in their clutches. Suzanne Simard, Wired, 7 May 2021 See More Word History First Known Use circa 1575, in the meaning defined above Kids Definition heartwood noun heart·​wood ˈhärt-ˌwu̇d  : the usually dark wood in the center of a tree
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