Sieve — Sieve, n. [OE. sive, AS. sife; akin to D. zeef, zift, OHG. sib, G. sieb. [root]151a. Cf. {Sift}.] 1. A utensil for separating the finer and coarser parts of a pulverized or granulated substance from each other. It consist of a vessel, usually… … The Collaborative International Dictionary of English
sieve tube — n. Bot. a longitudinal tube in the phloem of flowering plants, consisting of a connected series of individual cells (sieve cells) and serving to conduct organic food materials through the plant … English World dictionary
Sieve tube element — in the plant, sieve elements are living cells. They are thick and circular and can be different colours.At the interface between two sieve tube members in angiosperms are sieve plates, pores in the plant cell walls that facilitate the movement of … Wikipedia
sieve tube — Bot. 1. a vertical series of sieve cells in the phloem, specialized for the conduction of food materials. 2. a single sieve cell. [1870 75] * * * ▪ plant structure in flowering plants, elongated living cells (sieve tube elements) of the… … Universalium
sieve tube — noun tube formed by cells joined end to end through which nutrients flow in flowering plants and brown algae • Hypernyms: ↑vascular tissue • Part Holonyms: ↑phloem, ↑bast * * * noun : a tube consisting of an end to end series of thin walled… … Useful english dictionary
sieve cell — noun : an elongated tapering cell characteristic of the phloem of gymnosperms and lower vascular plants that is basically similar in form, function, and relationships to a sieve tube element but distinguished by rather uniformly distinguished… … Useful english dictionary
sieve tissue — noun : phloem * * * sieve tissue, Botany. tissue composed of sieve cells or sieve tubes … Useful english dictionary
sieve tube — sieve′ tube n. Bot. bot a vertical series of cylindrical cells in the phloem, specialized for the conduction of food materials • Etymology: 1870–75 … From formal English to slang
sieve area — noun also sieve field : an area in the wall of a sieve tube element, sieve cell, or parenchyma cell in which are clustered pores through which cytoplasmic connections pass to adjoining cells and which in sieve tube elements are typically most… … Useful english dictionary
sieve-tube element — noun or sieve tube member : a thin walled elongated living cell that has no nucleus at maturity, is continuous with other similar cells by protoplasmic strands which pass through the perforations of specialized sieve plates, prob. functions… … Useful english dictionary
