天火字典

英英字典： penumbra

penumbra

(Sound)

KK Pronunciation

〔 pIˋnʌmbrә 〕

Pronunciation

〔 piˊnʌmbrә 〕

Overview of noun penumbra

The noun penumbra has 1 sense

penumbra -- (a fringe region of partial shadow around an umbra)

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