Wood

 Pine 
 Spruce 
 Larch 
 Aspen 
 Birch 
 Alder 
 Beech 
 Oak 
 Elm 
 Cherry 
 Pear 
 Maple 
 Linden 
 Ash 

Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic material, a natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees,[1] or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs.[citation needed] In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or wood chips or fiber.

Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper, and as a feedstock for the production of purified cellulose and its derivatives, such as cellophane and cellulose acetate.

In 2005, the growing stock of forests worldwide was about 434 billion cubic meters, 47% of which was commercial.[2] As an abundant, carbon-neutral renewable resource, woody materials have been of intense interest as a source of renewable energy. In 1991 approximately 3.5 billion cubic meters of wood were harvested. Dominant uses were for furniture and building construction.[3]

History

A 2011 discovery in the Canadian province of New Brunswick yielded the earliest known plants to have grown wood, approximately 395 to 400 million years ago.[4][5]

Wood can be dated by carbon dating and in some species by dendrochronology to determine when a wooden object was created.

People have used wood for thousands of years for many purposes, including as a fuel or as a construction material for making houses, tools, weapons, furniture, packaging, artworks, and paper. Known constructions using wood date back ten thousand years. Buildings like the European Neolithic long house were made primarily of wood.

Recent use of wood has been enhanced by the addition of steel and bronze into construction.[6]

The year-to-year variation in tree-ring widths and isotopic abundances gives clues to the prevailing climate at the time a tree was cut.[7]

Other Languages
Afrikaans: Hout
Alemannisch: Holz
አማርኛ: እንጨት
Ænglisc: Holt
العربية: خشب
aragonés: Fusta
armãneashti: Lemnu
asturianu: Madera
Atikamekw: Mictikw
azərbaycanca: Ağac (material)
বাংলা: কাঠ
Bân-lâm-gú: Chhâ
башҡортса: Үҙағас
беларуская: Драўніна
беларуская (тарашкевіца)‎: Драўніна
भोजपुरी: लकड़ी
български: Дървесина
Boarisch: Hoiz
brezhoneg: Koad
català: Fusta
Cebuano: Kahoy
čeština: Dřevo
Cymraeg: Pren
Deutsch: Holz
eesti: Puit
Ελληνικά: Ξύλο
emiliàn e rumagnòl: Lègn
español: Madera
Esperanto: Ligno
euskara: Zur
فارسی: چوب
français: Bois
Frysk: Hout
Gaeilge: Adhmad
Gàidhlig: Fiodh
galego: Madeira
贛語:
客家語/Hak-kâ-ngî: Muk
한국어: 목재
հայերեն: Փայտ
हिन्दी: लकड़ी
Ido: Ligno
Igbo: Ńkú
Bahasa Indonesia: Kayu
interlingua: Ligno
Iñupiak: Qiruk
isiXhosa: Inkuni
íslenska: Viður
italiano: Legno
Basa Jawa: Kayu
ქართული: მერქანი
Kiswahili: Ubao
Kreyòl ayisyen: Bwa
Кыргызча: Жыгач
Latina: Lignum
latviešu: Koksne
Lëtzebuergesch: Holz (Material)
lietuvių: Mediena
Limburgs: Hout
Livvinkarjala: Puuaines
lumbaart: Legn
magyar: Fa (anyag)
Malagasy: Hazo
മലയാളം: തടി
Malti: Injam
मराठी: लाकूड
مصرى: خشب
مازِرونی: چو
Bahasa Melayu: Kayu
Mìng-dĕ̤ng-ngṳ̄: Chà
Nederlands: Hout
Nedersaksies: Holt
नेपाल भाषा: सिँ
日本語: 木材
Napulitano: Lignammo
Nordfriisk: Holt
norsk: Treverk
norsk nynorsk: Trevirke
occitan: Fusta
oʻzbekcha/ўзбекча: Yogʻoch
ਪੰਜਾਬੀ: ਲੱਕੜ
پنجابی: لکڑ
Picard:
português: Madeira
română: Lemn
Runa Simi: Q'iru
русский: Древесина
ᱥᱟᱱᱛᱟᱲᱤ: ᱠᱟᱴ
Scots: Wid
shqip: Druri
sicilianu: Lignu (materia)
Simple English: Wood
سنڌي: ڪاٺ
slovenčina: Drevo
slovenščina: Les
Soomaaliga: Alwaax
کوردی: چێو
српски / srpski: Дрво (материјал)
srpskohrvatski / српскохрватски: Drvo (materijal)
Basa Sunda: Kai
suomi: Puuaines
svenska: Trä
Tagalog: Kahoy
татарча/tatarça: Үзагач
తెలుగు: చెక్క
ไทย: ไม้
тоҷикӣ: Чӯб
ᏣᎳᎩ: ᎠᏓ
Türkçe: Tahta
українська: Деревина
اردو: لکڑی
vèneto: Łegno
vepsän kel’: Pu (material)
Tiếng Việt: Gỗ
West-Vlams: Out
Winaray: Kahoy
吴语: 木材
ייִדיש: האלץ
粵語:
žemaitėška: Medėina
中文: 木材
Kabɩyɛ: Ɖeeɣa
Lingua Franca Nova: Lenio