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
Words nearby sieve tube
sieva bean,
sieve,
sieve cell,
sieve graft,
sieve of eratosthenes,
sieve tube,
sieve-tube element,
sievers,
sievert,
sieyès,
sif
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