sieve tube

noun

, Botany.

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

sieve tube

noun

1. 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

Word History and Origins

Origin of sieve tube¹

First recorded in 1870–75