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The Collaborative International Dictionary
Diplococci

Diplococcus \Dip`lo*coc"cus\, n.; pl. Diplococci. [NL., fr. Gr. diplo`os twofold + ko`kkos grain, seed.] (Biol.) A form of micrococcus in which cocci are united in a binary manner. See Micrococcus. [1913 Webster] ||

Wiktionary
diplococci

n. (plural of diplococcus English)

WordNet
diplococci
diplococcus
  1. n. gram-positive bacteria usually occurring in pairs

  2. [also: diplococci (pl)]

Usage examples of "diplococci".

And included in the injection given to each citizen was a fraction of a very interesting formula which produces immunity to diplococci in a quite new fashion.

We have had practically no diplococci infections in our country for years back.