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A jointed and usually hollow grass stem.
The solid stem of certain monocotyledons, such as the sedges.
(mining engineering)
Fine, refuse coal, screened and separated from larger pieces.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the cylindrical, usually hollow stem of a cereal grass. A culm is somewhat distended at the nodes, that is, at the site of leaf attachment. In some cereal grasses, for example, corn, the stalks are solid. The arrangement of the vascular bundles and mechanical tissues along the periphery of the culm imparts great resilience.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
As bamboo culms are organic materials, it is necessary to cover them with a gold layer in order to make them conductive and obtain good resolution SEM images.
abyssinica seedlings at green house demonstrated that some culms possessed one or more number of branches developed from the main culm node.
First is culm bending-type lodging which occurs when plants fail to resist bending pressure, as is often seen in the upper internodes of rice affected by strong winds and rain.
Samples were made from the culms in natura to determine the basic density (BD), using the maximum moisture content method, according to the equation 1:
Samples cut from culms at internodes 6 with dimensions 25 mm x 25 mm x culms wall thickness.
Roots, culms with leaves, stolons, and rhizomes were sectioned fresh or fixed in FAA [28].
The bamboo plant is divided into three basic parts above ground: the culm (or main stem), branches, and leaves.
If you are planting in the open, Fargesia nitida is a good choice for windy sites and has attractive purple culms. It will grow to around 10ft tall and 3ft wide.
All four are similar in habit with culms that are erect or arching apically and their foliage leaves that are similar in size and form.
Bamboo has an extensive fibrous root system, and new culms are produced from underground rhizomes.