adv. [f. prec. + -LY2.] In an adventitious manner; by way of extraneous addition; extrinsically.
1746. Watson, in Phil. Trans., XLIV. 82. The Phosphori … some of which shine of themselves naturally, as the Glow-worm and Dates; or adventitiously, as the Flesh of Animals, which most probably arises from a Degree of Putrefaction.
1852. Gladstone, Gleanings, IV. lxxvii. 118. A political colour has been adventitiously affixed by some persons to my publication.
