microtubule

American  

[mahy-kroh-too-byool, -tyoo-] / ˌmaɪ kroʊˈtu bjul, -ˈtju- /

noun

Cell Biology.

1. a hollow cylindrical structure in the cytoplasm of most cells, involved in intracellular shape and transport.

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microtubule British  

/ ˌmaɪkrəʊˈtjuːbjuːl /

noun

1. biology a tubular aggregate of protein subunits that forms structures, such as the mitotic spindle or the cilia of animal cells or of protozoans, in which the protein interacts with other proteins to generate various cellular movements

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microtubule Scientific  

/ mī′krō-to̅o̅′byo̅o̅l /

1. Any of the tube-shaped protein structures that help eukaryotic cells maintain their shape and assist in forming the cell spindle during cell division. Microtubules and actin filaments are the main components of the cell's supporting matrix or cytoskeleton.

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Etymology

Origin of microtubule

First recorded in 1960–65; micro- + tubule

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Example Sentences

See Examples For:

microtubule

After DNA separation, large microtubule structures called asters expand throughout the cytoplasm.

From Science Daily ● Feb. 28, 2026

Instead of the engine, CENP-E behaves like a coupling that secures the link between a chromosome and the microtubule.

From Science Daily ● Dec. 10, 2025

The whole process is facilitated by a newly-discovered latch mechanism, revealing that it’s the growing microtubule itself which helps the template find its correct shape.

From Science Daily ● Feb. 1, 2024

The researchers plan to follow up by directing chemical cargo along the microtubule branches.

From Science Daily ● Jan. 25, 2024

Zaferani said scientists are still working to understand elements of microtubule growth and chemical properties.

From Science Daily ● Jan. 25, 2024

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