poirier (French)

Where does "poirier" come from?

The French noun 'poirier', meaning 'pear tree', is inherited from the Old French 'perier'[1]. This term traces back to the Vulgar Latin '*pirārius'[1], which was formed by adding the suffix '-ārius' to the Latin 'pirum' meaning 'a pear'[5]. The word was later reanalyzed in French as a combination of 'poire' meaning 'pear' and the suffix '-ier'[1]. The Latin 'pirum' itself may have entered the language as a loanword from an unknown Mediterranean substrate source or could stem from the Proto-Indo-European '*peys-'[4].

Open questions

• The ultimate origin of the Latin 'pirum' is debated as either a Mediterranean loanword or a derivative of a Proto-Indo-European root. [4]

Full etymology tree

• poirier (French), 'pear tree'
  • inherited perier (Old French)
    • derived *pirarius (Latin), 'a pear-tree'
      • derived pirum (Latin), 'a pear (fruit)'
      • suffix -arius (Latin), 'Used to form adjectives from nouns or numerals.'

Ancestors

• pirus (Latin)
• poire (French)
• -ier (French)

Sources

1. poirier (French) - Wiktionary
2. poire (French) - Wiktionary
3. pirus (Latin) - Wiktionary
4. pirum (Latin) - Wiktionary
5. pirarius (Latin) - Wiktionary

Updated August 2026

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