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metagummic
Brit. 
/ˌmɛtəˈɡʌmɪk/
, /ˌmɛtəˈɡʌmɪk/U.S. /ˌmɛdəˈɡəmɪk/
Obsolete/ˌmɛdəˈɡəmɪk/ΚΠ
1860 Pharmaceut. Jrnl. & Trans. Apr. 519 When metagummic acid is boiled with lime, a soluble substance is obtained identical with gum arabic.
1890 J. S. Billings National Med. Dict. I. 251/1 Cerasin, the insoluble constituent of cherry gum; chemically, a calcium salt of meta-gummic acid.
1906 N.E.D. at Meta- Metagummic = Metarabic.
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