> as lemmas

1827 Lancet 17 Nov. 244/1 You have, in this instrument, what Volta was a long time in search of, namely an electropolar arrangement of extremities.

1876 Proc. Royal Soc. 1875–6 24 407 If it be assumed that a dielectric under electric induction has every element of volume of its substance in an electropolar state.

1935 Proc. Royal Soc. A. 151 384 The hydrogen atom..makes its presence felt outside this sphere, mainly by its electropolar effect.

1994 Jrnl. Catalysis 146 211/1 According to the theory of electrophilic substitutions..the position of the substitution in [an] aromatic ring depends on the electropolar nature of the group introduced.