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Webster 1913 Edition

Adj.

[Pref.

pro-

+ L.

fulgere

to shine.]

Shining forth; brilliant; effulgent.

[Obs.]

“Profulgent in preciousness.”

Chaucer.

profulgent ‎(comparative more profulgent, superlative most profulgent)

(obsolete) Shining forth; brilliant; effulgent.
Profulgent in preciousness. — Chaucer.