modular lattice

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modular lattice

[‚mäj·ə·lər ′lad·əs]
(mathematics)
A lattice with the property that, if x is equal to or greater than z, then for any element y, the greatest lower bound of x and v equals the least upper bound of w and z, where v is the least upper bound of y and z and w is the greatest lower bound of x and y.