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protocontinent
protoctist
protogalaxy
protohuman
protoindustrialization
protolanguage
protolithic
protomartyr
protomorphic
proton
proton number
proton pump
proton pump inhibitor
proton synchrotron
protonema
protonics
protonotary
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prototrophic
pro·to·tro·phic [ prtō trṓfik, prtə tróffik ]


adjective 
Definition:
 
needing same nourishment: describes a microorganism that has the same nutritional needs and metabolic characteristics as the wild parent strain

pro·to·troph [ prṓtə trf, prṓtə tròf ] noun
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