Term: purple bacteria: free-living Gram-negative pink to purplish-brown bacteria containing bacteriochlorophyll
Candidate hypernym: phototrophic bacteria: green and purple bacteria; energy for growth is derived from sunlight; carbon is derived from carbon dioxide or organic carbon → 1
Candidate hypernym: are: a unit of surface area equal to 100 square meters → 0
Candidate hypernym: frank: a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll → 0
Candidate hypernym: shovelhead: small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries → 0
Candidate hypernym: storm cloud: a heavy dark cloud presaging rain or a storm → 0
Candidate hypernym: quinquennium: a period of five years → 0
Candidate hypernym: leap year: in the Gregorian calendar: any year divisible by 4 except centenary years divisible by 400 → 0
Candidate hypernym: limelight: a focus of public attention → 0
Candidate hypernym: protozoology: the branch of zoology that studies protozoans → 0
Candidate hypernym: haunt: a frequently visited place → 0
Candidate hypernym: rail technology: the activity of designing and constructing and operating railroads → 0