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1928 W. N. Shaw Man. Metereol. II. p. xxxii Kilobar, a name which it is proposed to substitute for the word ‘millibar’ to express a pressure of 1000 dynes per square centimetre, on the ground that the word ‘bar’ had been used in Physical Chemistry to denote the C.G.S. unit of pressure (1 dyne per square centimetre) before it was employed in meteorology to express a million dynes per square centimetre.

1971 I. G. Gass et al. Understanding Earth iii. 60/2 Olivine Mg₂SiO₄ can recrystallize at pressures of over 150 kilobars to a new polymorphic form called a spinel structure.