Definition of adel-
: concealed : not apparent Adelaster adelopod
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Origin and Etymology of adel-
New Latin, from Greek adēl, adēlo- unseen, from adēlos, from a- 2a- + dēlos visible, evident; akin to Old English tǣtan to gladden, Old High German zeiz dear, Old Norse teitr glad, Sanskrit dīdeti he shines, Latin dies day
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