American Heritage Dictionary
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Century Dictionary
GNU Webster's 1913
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WordNet
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Elsewhere on the web
Leaf-hypoderm biform or variable.— The Genus Pinus
Fourierist even suspects that this biform aphorism is susceptible of two interpretations.— What is Property?
Cells of hypoderm biform fig. 22.— The Genus Pinus
The biform hypoderm is not always obvious (clausa, Banksiana, etc.) where in some leaves there is but one row of cells.— The Genus Pinus
Among Hard Pines there is no Old World species with a biform hypoderm.— The Genus Pinus

American Heritage Dictionary (1)
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