peta- root words — words with the peta- root

The root peta- comes from Greek penta, meaning quadrillion (10^15) SI prefix, altered from Greek five. 2 words in Dendril are built from it, including petajoule, petawatt. Dendril shows them on a free interactive word map — no signup, no ads.

Words that use the peta- root

Explore words with peta- — words containing the peta- root and sharing its sense of "quadrillion (10^15) SI prefix, altered from Greek five". Examples include petajoule, petawatt. Click any word to see its own roots, definition, and related words.

What does peta- mean?

The peta- root means quadrillion (10^15) SI prefix, altered from Greek five, from Greek penta. Recognizing it helps you decode and remember the many English words built on this root.