PURPLE BACTERIA as NOUN

1. Meaning
   • free-living Gram-negative pink to purplish-brown bacteria containing bacteriochlorophyll
   Hypernyms(s) purple bacteria is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • phototrophic bacteria (what does phototrophic bacteria mean?)
   • phototropic bacteria (what does phototropic bacteria mean?)