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leu·ko·plast(lo͞o′kə-plăst′) also leu·co·plast (lo͞o′kə-plăst′)
A colorless plastid in the cytoplasm of plant cells around which starch collects.
(Biochemistry) any of the small colourless bodies occurring in the cytoplasm of plant cells and used for storing food material, esp starch
a starch-storing colorless plastid in the cells of roots and underground or internal plant parts.