nummulation

plural nummulations

1. raremedicineThe arrangement or aggregation of red blood cells into rouleaux, resembling piles of coins.

   Examples of the other blood coagulation system measurement items include coagulation of blood (blood clotting), …, nummulation of red blood cells, blood aggregation, …, and fibrinolysis.

   2019, Aya Murata et al., United States Patent Application Pub. No. 2019/0049428 A1

   1 more example

   A marked peculiarity of these bodies is their tendency to cohere immediately after the blood is drawn, thus forming Schultze's grannule-masses, and this process is analogous to the nummulation of the red corpuscules.

   1886 William Osler, “Cartwright Lectures on Certain Problems in the Physiology of the Blood,” Lecture 1, in Gaillard’s Medical Journal Volume 42