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proton pump
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protohuman
pro·to·hu·man [ prtō hymən ] (plural pro·to·hu·mans)


noun 
Definition:
 
extinct hominid: an extinct hominid or primate that has some of the characteristics of modern people

pro·to·hu·man adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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