pyrophoric

adjective
py·​ro·​phor·​ic | \ ˌpī-rə-ˈfȯr-ik How to pronounce pyrophoric (audio) , -ˈfär- \

Definition of pyrophoric

1 : igniting spontaneously
2 : emitting sparks when scratched or struck especially with steel

Examples of pyrophoric in a Sentence

Recent Examples on the Web Intel, Nov. 11, 1986 (Aloha): A pyrophoric gas silane cylinder leaks through a valve and catches fire. Mike Rogoway, OregonLive.com, 17 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pyrophoric.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of pyrophoric

1788, in the meaning defined at sense 1

History and Etymology for pyrophoric

New Latin pyrophorus, from Greek pyrophoros fire-bearing, from pyr- + -phoros carrying — more at -phore

Learn More About pyrophoric

Time Traveler for pyrophoric

Time Traveler

The first known use of pyrophoric was in 1788

See more words from the same year

Dictionary Entries Near pyrophoric

pyrophilous

pyrophoric

pyrophoric alloy

See More Nearby Entries 

Statistics for pyrophoric

Cite this Entry

“Pyrophoric.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrophoric. Accessed 6 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Flower Edition

Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!