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from the GNU version of the Collaborative International Dictionary of English

  • n. same as archesporium.

from The Century Dictionary and Cyclopedia

  • n. In botany, a layer of small cells within the anther, giving rise to the mother-cells of the pollen and to the very delicate lining of the anther-cell. The name is also given to a similar structure in some of the vascular cryptogams.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. primitive cell or group of cells from which a mother cell develops


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