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PetrarchPetrarchan sonnet
Petrary
Petre
Petrean
Petrel
Petrescence
Petrescent
Petri dish
Petri net
Petrifaction
Petrifactive
Petrific
Petrificate
Petrification
petrified
-- Petrified Forest National Park --
Petrify
petrifying
Petrine
petrissage
Petro-
petrochemical
Petrocoptis
Petrogale
Petroglyphic
Petroglyphy
Petrograd
Petrographic
Petrography
Petrohyoid
Petrol
petrol bomb
Petrified Forest National Park
| Noun | 1. |  Petrified Forest National Park - a national park in Arizona having the world's largest collection of petrified coniferous trees |