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half life [half lives]▼◼◼◼noun[UK: hɑːf laɪf] [US: ˈhæf ˈlaɪf]
halflife [halflives]▼◼◻◻noun[UK: hɑːf laɪf] [US: ˈhæf ˈlaɪf]
half-life period▼◼◻◻[UK: hɑːf laɪf ˈpɪə.rɪəd] [US: ˈhæf ˈlaɪf ˈpɪ.riəd]
half period▼[UK: hɑːf ˈpɪə.rɪəd] [US: ˈhæf ˈpɪ.riəd]
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