1. Indicating the first or 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"

1. First, original, beginning of

See also: early

Encyclopedia: Proto

• over the counter security
• over the counter stock
• over-correct
• over-crowding
• over-egg
• over-embellished
• over-the-counter
• over-the-counter drug
• over-the-counter market
• over-the-counter medicine
• over-the-hill
• over-the-shoulder bombing
• over-the-top
• overabundance
• overabundant
• overachieve
• overachievement
• overachiever
• overact
• overacting
• overactive
• overactivity
• overage
• overaged
• overall