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heliostat [heliostats]▼◼◼◼noun[UK: hˈelɪˌɒstat] [US: hˈelɪˌɑːstæt]
helio [helios]▼noun[UK: ˈhiː.lɪəʊ] [US: ˈhiː.liːˌo.ʊ]
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