prefix ·Rare ·Advanced level

Definitions

Prefix

1. 1
   In the metric system, multiplying the unit to which it is attached by 10¹⁵ (a short scale quadrillion or long scale billiard). Symbol: P morpheme

Antonyms

All antonyms

femto

Etymology

Based on penta- (“five”) (from Ancient Greek πέντε (pénte)) with the middle letter removed, analogous to tera-.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.