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megacoccus
megacoccus n.
Brit. 
/ˌmɛɡəˈkɒkəs/
, /ˌmɛɡəˈkɒkəs/U.S. /ˌmɛɡəˈkɑkəs/
(plural megacocci) [ < mega- comb. form + -coccus (in micrococcus n., probably after German Megacoccos (1874)] Biology rare a (relatively) large coccoid bacterium; cf. macrococcus n. at macro- comb. form 1a, micrococcus n./ˌmɛɡəˈkɑkəs/ΚΠ
1883 D. MacAlister tr. E. Ziegler Text-bk. Pathol. Anat. i. §185. 265 According to size we may distinguish them as micrococci, mesococci, and megacocci.
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