metronymic /met-rə-nimˈik/ or matronymic /mat-/

1. Derived from the name of one's mother or other female ancestor
2. Indicating the mother
3. Using such a system of naming

A name so derived (cf patronymic)

• factory farming
• factory farms
• factory floor
• factory-gate charge
• factory-gate price
• factory-gate prices
• factory inspectorate
• factory ship
• factory ships
• factory shop
• factory shops
• factotum
• factotums
• facts
• fact sheet
• fact sheets
• facts of life
• factual
• factualities
• factuality
• factualness
• factualnesses
• factum
• factums
• facture