The process or state of splitting into two layers or laminae.
From di- (two) + lamination (the process of layering). Lamination comes from Latin lamina (thin plate). The prefix di- specifies the resulting two-layer structure.
Dilamination occurs in geology when certain rock formations split into exactly two distinct layers due to pressure or weathering, and it's also studied in materials science when composite materials fail along their internal boundaries.
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