central cylinder

American  

noun

Botany.

1. stele.

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Example Sentences

Elongate and engorge a gastraphetes’ central cylinder to the point that a dragon would notice it, however, and it becomes impossible to fire without gripping it more firmly than even the strongest archer could manage.

From Slate • May 7, 2019

All the bosses of one line of rollers were connected so that one driving gear would serve for the whole length, and all the spindles were driven by bands from a central cylinder.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 5 "Cosway" to "Coucy" by Various

In this the spindles, arranged vertically in the frame, are driven by bands from a central cylinder, and project through apertures in a horizontal bar.

From Inventions in the Century by Doolittle, William Henry

The louse-like offspring sticks its proboscis into the tissues as far as the central cylinder.

From Disease in Plants by Ward, H. Marshall

The whole central cylinder is called a “fibro-vascular bundle,” and in its perfect form, at least, is found in no plants below the ferns, which are also the first to develop true roots.

From Elements of Structural and Systematic Botany For High Schools and Elementary College Courses by Campbell, Douglas Houghton