
1) Before history or type 2) Comes before plasm 3) Earliest combiner 4) Earliest original 5) Early 6) First opening 7) First prefix 8) Kind of type 9) Plasm variety 10) Plasma beginning 11) Prefix with plasm 12) Prefix with plasm or type 13) Prefix with type 14) Prefix with type or plasm 15) Prefix with typical or human
Found on
https://www.crosswordclues.com/clue/proto

1) Early
Found on
https://www.crosswordclues.com/clue/proto
[magazine] Proto is a national science magazine and website produced by Massachusetts General Hospital in collaboration with Time Inc. Content Solutions. The quarterly magazine was launched in 2005 and covers news in the field of biomedicine and health care, focusing on basic and clinical research, policy and technology. Recently featured t...
Found on
http://en.wikipedia.org/wiki/Proto_(magazine)

Earliest; First.
Found on
http://www.cat-world.com.au/glossary
No exact match found.