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WordReference Random House Unabridged Dictionary of American English © 2024nu•cle•o•phil•ic (no̅o̅′klē ə fil′ik, nyo̅o̅′-),USA pronunciation adj. [Chem.]- Chemistryof or pertaining to electron contribution in covalent bonding (opposed to electrophilic).
- 1930–35; nucleo- + -philic
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