| PROTO | (computer science) rules determining the format and transmission of data |
|---|---|
| PROTO | any of the unicellular protists |
| PROTO | any of the families of Protoctista |
| PROTO | any genus of Protoctista |
| PROTO | the order of protoctista |
| PROTO | in most modern classifications, replacement for the Protista |
| PROTO | characteristic of the earliest phase of geometric art especially in Greece |
| PROTO | a complex red organic pigment containing iron and other atoms to which oxygen binds |
| PROTO | a reddish-brown chloride of heme |
| PROTO | Pliocene horse approaching donkeys in size |
| PROTO | the study humans prior to the invention of writing |
| PROTO | probably warm-blooded |