Roget's Thesaurus: Entry 425 (Transparency)

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#425. Transparency. -- N. transparence, transparency; clarity; translucence, translucency; diaphaneity[obs]; lucidity, pellucidity[obs], limpidity; fluorescence; transillumination, translumination[obs]. transparent medium, glass, crystal, lymph, vitrite[obs], water.

V. be transparent &c. adj.; transmit light.

Adj. transparent, pellucid, lucid, diaphanous, translucent, tralucent|, relucent[obs]; limpid, clear, serene, crystalline, clear as crystal, vitreous, transpicuous[obs], glassy, hyaline; hyaloid[Med], vitreform[obs].