macrocrystallineadj.
/ˌmakrəʊˈkrɪstəlʌɪn/, /ˌmakrəʊˈkrɪstl̩ʌɪn/, U.S. /ˈˌmækroʊˈkrɪstələn/, /ˈˌmækroʊˈkrɪstəˌlaɪn/ Crystallography and Pharmacology.
Consisting of or containing crystals which are large enough to be seen without a microscope, or which are relatively large.
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the world > matter > chemistry > crystallography (general) > crystal (general) > [adjective]
crystalline1745
macrocrystalline1909
1909 Webster's New Internat. Dict. Eng. Lang. Macrocrystalline, Petrog. consisting of, or having, crystals large enough to be determined by the eye or a simple lens.
1952 Trans. Amer. Geophysical Union 33 749 The mantle will now rotate eastward around the core..and will grind it off unequally because of its macrocrystalline character.
1953 A. G. E. Pearse Histochem. xii. 279 They serve to illustrate..the macrocrystalline nature of the deposits from unsubtituted indoxyls.
1998 Jrnl. Microbial Chemotherapy 42 363 Three regimens were used: group A (43 patients), 50 mg microcrystalline nitrofurantoin, bd; group B (110 patients), 100 mg macrocrystalline nitrofurantoin (Macrodantin), od; group C (66 patients), 50 mg Macrodantin, od.
This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022).
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adj.1909