a. [mod. f. Gr. ἄπλαστ-ος unshapen + -IC, after πλαστικός.] Characterized by, or tending to, irregularity or absence of organic structure (technically called aplasia).
1839–47. Todd, Cycl. Anat. & Phys., III. 754/1. Caco-plastic and aplastic deposits.
1875. H. Wood, Therap. (1879), 49. The blood was also rendered very aplastic.
