pseudomorphousadj.

1816 W. Phillips Elem. Introd. Mineral. p. l Minerals exhibiting impressions of the forms peculiar to the crystals of other substances are said to be pseudomorphous.

1851 S. P. Woodward Man. Mollusca i. 40 Fossil shells are often pseudomorphous, or mere casts..of cavities once occupied by shells.

1888 Jrnl. Chem. Soc. 54 233 Martinite is a new calcium phosphate pseudomorphous after gypsum, from the phosphorite beds of the Island of Curaçao.

1909 H. G. Wells Tono-Bungay i. 12 To borrow an image from my mineralogical days, these Jews were not so much a new British gentry as ‘pseudomorphous’ after the gent.

1955 Sci. Monthly Nov. 245/2 Removal of the interstitial lignin could lead to pseudomorphous replacement of the entire wall by reworked carbon.

2004 Sedimentary Geol. 169 129 Pseudomorphous replacement by hematite occurred during the burial process.

1943 Amer. Jrnl. Sci. 243 a. 539 The early soft mineral, franckeite, was found strongly replaced, pseudomorphously, by minerals of higher-temperature significance, such as pyrrhotite.

1962 W. A. Deer et al. Rock-forming Minerals V. 50 A mineral occurring pseudomorphously after loparite..has been named metaloparite.

1998 Philos. Trans. (Royal Soc.) B. 353 2019/2 The shells in all samples are normally recrystallized but even nanometric original structures can be replaced pseudomorphously in well preserved valves.