Definition of "Einsteinian"

Referring to equations (1) and (2), which give respectively the Newtonian-Einsteinian transformations and the transformations from R {\displaystyle R} and L {\displaystyle L} times to Newtonian or Einsteinian times, we see a decided resemblance between them.

1924, University of California Publications in Philosophy, Berkeley, Calif.: University of California Press, page 250

The blasphemies which appeared on earth, it was hinted, came from the dark planet Yuggoth, at the rim of the solar system; but this was itself merely the populous outpost of a frightful interstellar race whose ultimate source must lie far outside even the Einsteinian space-time continuum or greatest known cosmos.

1931 August, H[oward] P[hillips] Lovecraft, “The Whisperer in Darkness”, in Farnsworth Wright, editor, Weird Tales: A Magazine of the Bizarre and Unusual, volume XVIII, number 1, Indianapolis, Ind.: Popular Fiction Pub. Co., chapter 3, page 45, column 1

If a physicist in the early part of this century were trying to decide whether to accept an Einsteinian conception of space and time, the issue would not be, 'Is the Einsteinian account true?' […] The issue to be addressed is the pragmatic question of whether the new Einsteinian conception seems to solve what are regarded as the most pressing current puzzles, has the greater scope for future explanation, etc.

1993, Joseph Runzo, “World Views and the Epistemic Foundations of Theism”, in World Views and Perceiving God, New York, N.Y.: St. Martin's Press, section X, pages 133–134

This talk of pre-Einsteinian and Einsteinian worlds reveals another facet to the dilemma between the two interlocutors.

1997, Floyd Merrell, “Rules are There to be Broken?”, in Peirce, Signs, and Meaning (Toronto Studies in Semiotics), Toronto, Ont., Buffalo, N.Y.: University of Toronto Press, part IV (If so, then into the Breakers, Vortices, Cross-currents, and Undertows of Semiosis), page 254

[H]e was ushered into a neat little office on the third floor, where he was greeted by a charming, roly-poly man with gold-rimmed spectacles and a huge shock of Einsteinian hair, dressed in an old-fashioned tweed suit with a vest and gold watch chain, looking like a man out of a Dickens novel.

2014, Douglas Preston, Lincoln Child, chapter 5, in The Lost Island (A Gideon Crew Novel; book 3), New York, N.Y.: Grand Central Publishing