As a noun proto
is proton.
As a contraction pro is
(label) to the; for the.
proto
English
Adjective
(-)
Prototypical; preceding the proper beginning of something
* {{quote-news, 2007, March 11, Horacio Silva, Muscle Man, New York Times citation
, passage=
Anagrams
*
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pro
Translingual
Abbreviation
(Abbreviation)
(head)
ISO 639 code for
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