intro- (English)

Where does "intro-" come from?

The English prefix 'intro-' comes from the Latin prefix 'intro-', meaning 'inwards'[1]. This Latin form originates from the word 'intro', meaning 'inward, inwards'[1], which itself derives from 'intrā', meaning 'within', combined with the verbalizer suffix '-ō'[2].

Full etymology tree

• intro- (English), 'inward, inwards.'
  • prefix intro- (Latin), 'inward, inwards.'
    • derived intro (Latin), 'to enter, go into, come in, get in, penetrate'
      • derived intra (Latin), 'within; inside'
      • suffix -o (Latin), 'Used to form masculine nouns with various meanings:'

Ancestors

• intro- (Latin)

Sources

1. intro- (English) - Wiktionary
2. intro (Latin) - Wiktionary

Updated August 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris