[Middle English, from Old French, from Latin resplendēns, resplendent- present participle of resplendēre, to shine brightly, re-, re-, + splendēre, to shine.]
adjective
Splendid or dazzling in appearance; brilliant.
derivatives
re·spleńdence
noun
re·spleńdent·ly
adverb
The American Heritage® Dictionary of the English Language, Fourth Edition