impersistentadj.

1849 J. M. Wilson Rural Cycl. III. 17/2 It [sc. the root of Krameria] exhibits a ligneous centre and a dark-red, fibrous, impersistent bark.

1856 F. L. Olmsted Journey Slave States Pref. p. ix Growling is sometimes a duty; and the traveler might well be suspected of being a ‘dead head’, or a sneak, who did not find frequent occasion for its performance, among the notoriously careless, make-shift, impersistent people of the South.

a1866 J. Grote Exam. Utilit. Philos. (1870) xix. 324 We ought..to know whether some races are strong and persistent,..others weak and impersistent, so as to yield to others and die out.

1921 F. J. Smiley Rep. Boreal Flora Sierra Nevada Mountains Calif. 180 Flowers red, numerous in divaricate panicles on impersistent scapes; leaves much shorter than the scapes.

2015 A. Münchau in K. R. Kumar et al. Neurogenetics v. 25 The horizontal eye movements are marginally slow and gaze fixation is impersistent.

1889 H. T. Brown in Q. Jrnl. Geol. Soc. 45 7 An eroded and impersistent bed of hard, fine-grained, Coal-measure sandstone (‘cank’).

1913 Geol. Mag. 5th Decade 10 519 The difficulties in the interpretation of the succession in the Bala district appear to be due largely to the impersistent nature of the limestones.

1965 G. J. Williams Econ. Geol. N.Z. iii. 27/2 Various impersistent shoots were worked in the Pandora and South Keep-it-Dark mines.

2011 Jrnl. Vertebr. Paleontol. 31 707/1 These sandstones are relatively homogeneous, but several impersistent marker bands are present.