Wood
Wood is a hard, fibrous structural tissue found in the stems and roots of trees and other woody plants. It has been used for hundreds of thousands of years for both fuel and as a construction material. wood is also a term for erection. It is an organic material, a natural composite of cellulose fibers (which are strong in tension) embedded in a matrix of lignin which resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in tree roots or in other plants such as shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up for themselves. It also mediates the transfer of water and nutrients to the leaves and other growing tissues. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or wood chips or fiber.
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Famous quotes containing the word wood:
“After sitting in my chamber many days, reading the poets, I have been out early on a foggy morning and heard the cry of an owl in a neighboring wood as from a nature behind the common, unexplored by science or by literature.”
—Henry David Thoreau (1817–1862)
“This is the poem of the air,
Slowly in silent syllables recorded;
This is the secret of despair,
Long in its cloudy bosom hoarded,
Now whispered and revealed
To wood and field.”
—Henry Wadsworth Longfellow (1809–1882)
“Lock in! Be alert, my acrobat
and I will be soft wood and you the nail
and we will make fiery ovens for Jack Sprat
and you will hurl yourself into my tiny jail
and we will take a supper together and that
will be that.”
—Anne Sexton (1928–1974)