资料来源 : pyDict

细菌

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Bacterium \Bac*te"ri*um\, n.; pl. {Bacteria}. [NL., fr. Gr. ?,
   ?, a staff: cf. F. bact['e]rie. ] (Biol.)
   A microscopic vegetable organism, belonging to the class
   Alg[ae], usually in the form of a jointed rodlike filament,
   and found in putrefying organic infusions. Bacteria are
   destitute of chlorophyll, and are the smallest of microscopic
   organisms. They are very widely diffused in nature, and
   multiply with marvelous rapidity, both by fission and by
   spores. Certain species are active agents in fermentation,
   while others appear to be the cause of certain infectious
   diseases. See {Bacillus}.

资料来源 : WordNet®

bacterium
     n : (microbiology) single-celled or noncellular spherical or
         spiral or rod-shaped organisms lacking chlorophyll that
         reproduce by fission; important as pathogens and for
         biochemical properties; taxonomy is difficult; often
         considered plants [syn: {bacteria}]