middle lamella

American  

noun

Botany.

1. the layer of cementing material, composed of pectates and similar substances, between the walls of adjacent cells.

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middle lamella Scientific  

1. The pectin-rich intercellular material cementing together the primary walls of adjacent plant cells.

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Etymology

Origin of middle lamella

First recorded in 1920–25

Example Sentences

They are the principal constituents of "woody fiber," of cell-walls, and of the "middle lamella" which fills up the spaces between the plant cells.

From The Chemistry of Plant Life by Thatcher, Roscoe Wilfred

These all seem to be products of hydrolysis of a mother substance known as "pectose," which constitutes the middle lamella of unripe fruit, etc.

From The Chemistry of Plant Life by Thatcher, Roscoe Wilfred