Last Updated：2025/11/19

(transitive) To treat rubber with heat and (usually) sulphur to harden it and make it more durable. / (intransitive) To undergo such treatment.

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vulcanize

Source Word

vulcanize

IPA(Pronunciation)

Verb

transitive intransitive

Japanese Meaning

ゴムに熱と通常は硫黄を加えて、硬化させ耐久性を高める処理を行うこと。 / そのような硫黄加硫処理を受けること。

The factory planned to vulcanize the newly produced rubber hoses before shipment to ensure durability.

工場は、新しく製造したゴムホースを出荷前に加硫して、耐久性を確保する予定だった。

Sense（1）

(transitive) To treat rubber with heat and (usually) sulphur to harden it and make it more durable.

Sense（2）

(intransitive) To undergo such treatment.

These vulcanized hearts, they only become more resistant when you ask for mercy.

vulcanizes

（ present singular third-person ）

vulcanizing

（ participle present ）

vulcanized

（ participle past ）

vulcanized

（ past ）