Definition of blowout preventer in English:

blowout preventer

Syllabification: blow·out pre·vent·er

Entry from US English dictionary

noun

A heavy valve or assembly of valves fitted at the top of an oil well during drilling and closed in the event of a blowout.

Definition of blowout preventer in:

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Word of the day retroflex
Pronunciation: ˈrɛtrə(ʊ)flɛks
adjective
turned backwards