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Adjective: proto  prow-tow
  1. Indicating the first, earliest or original
    "'proto' is a combining form in a word like 'protolanguage' that refers to the hypothetical ancestor of another language or group of languages"
Combining form: proto-  prow-tow
  1. First, original, beginning of

See also: early

Encyclopedia: Proto, Richard

Proto-

Nearest

prothrombin accelerator
prothrombinase
protip
protirelin
protist
Protista
protistan
Protium
Protium guianense
Protium heptaphyllum
proto
protoactinium
protoanthropology
protoarchaeology
protoarcheology
protoavis
protoceratops
protocol
protoctist
protoctist family