astrophysicsn.

1870 Nature 27 Oct. 526/1 The separation of the influences which pressure and temperature exercise on the nature of the spectrum of luminous gases must be regarded as a problem the solution of which is of the highest importance for astrophysics.

1890 Sat. Rev. 9 Aug. 176/1 The new science of ‘astrophysics’.

1897 Astrophysical Jrnl. 6 271 There often exists between two allied sciences a broad ground,..which may be so extensive and fertile as to justify the development of a new science... Such is the nature of the science which Professor Langley has called the new astronomy, and which is also, and perhaps more generally, known as astrophysics.

1938 R. W. Lawson tr. G. von Hevesy & F. A. Paneth Man. Radioactivity (ed. 2) xxvi. 289 The results of their observations [of cosmic radiation] are no less important in astrophysics than in atomic research.

1946 Nature 23 Nov. 764/2 A modern laboratory for spectroscopic research—a most important branch in connection with future developments in astrophysics.

1972 Jrnl. Brit. Astron. Assoc. 83 67 These observations gave birth to two new branches in astrophysics, which we now call X-ray astronomy and gamma-ray astronomy.

2001 C. Glazebrook Madolescents 12 It doesn't make sense, having to pass exams just to wax bikini lines and pop a few blackheads. I mean, it's not exactly astrophysics.