Pronúncia: árk
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masculí
- arquitectura arch.
- archway.
- arc de ferradura horseshoe arch, Moorish arch.
- arc de mig punt semicircular arch.
- arc ogival pointed arch.
- arc triomfal triumphal arch.
- anatomia arch.
- geometria arc.
- electricitat arc.
- arc voltaic arc lamp.
- música bow.
- arc iris, arc del cel, arc de Sant Martí meteorologia rainbow.