ambipolar

[ am-bi-poh-ler ]
/ ˌæm bɪˈpoʊ lər /

adjective

working in two directions simultaneously.
Physics, Chemistry. pertaining to both positive and negative ions; applied to both positive and negative ions at the same rate.

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British Dictionary definitions for ambipolar

ambipolar
/ (ˌæmbɪˈpəʊlə) /

adjective

electronics (of plasmas and semiconductors) involving both positive and negative charge carriers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012