proto-
/ˈpɹəʊ.təʊ/prefix
Middle School
1
An early, primitive stage of development.
2
Original, older.
3
First in order; which stage is first.
4
Primary.
5
Most recent common ancestor (often hypothetical) of.
6
A minimal proportion of a particular substance when in a combination. See protosalt.
7
Relating to protons and/or positive charge.
8
A proto-metal.
9
Anterior.
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