Answer: boronic

AnswerCrossword Clue
BORONICOf a certain nonmetallic element.
boronicpertaining to boron (a non-metallic element)
boronicnonmetallic element occurring naturally only in combination, as in borax or boric acid, and obtained in either an amorphous or a crystalline form when reduced from its compounds. Symbol: B; at. wt.: 10.811; at. no.: 5