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Pronunciation varies by accent · noun
(historical) A fuse for cannons or other artillery, consisting of strong paper filled with a nitre, sulphur, and mealed powder, used principally to ignite the priming in proving guns, and as an incendiary material in shells..
Use portfire when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Portfire means (historical) A fuse for cannons or other artillery, consisting of strong paper filled with a nitre, sulphur, and mealed powder, used principally to ignite the priming in proving guns, and as an incendiary material in shells..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use portfire where its definition matches the intended context.
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