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(of a substance) allowing light, but not detailed shapes, to pass through; semitransparent:

(曇りガラスのように)半透明の (!transparentとopaqueの間)

e.g. fry until the onions become translucent.

translucence |tranzˈlo͞osns, tran(t)sˈlo͞osns| noun

translucency |tranzˈlo͞osnsē, tran(t)sˈlo͞osnsē| noun

translucently adverb

late 16th century (in the Latin sense): from Latin translucent- ‘shining through’, from the verb translucere, from trans- ‘through’ + lucere ‘to shine’.