sieve tube


noun Botany.

a vertical series of sieve cells in the phloem, specialized for the conduction of food materials.
a single sieve cell.

Origin of sieve tube

First recorded in 1870–75

British Dictionary definitions for sieve tube

sieve tube

noun

botany an element of phloem tissue consisting of a longitudinal row of thin-walled elongated cells with perforations in their connecting walls through which food materials pass