# nummulation

> English word · Noun

## Definitions
1. The arrangement of the red blood corpuscles in rouleaux, like piles of coins, as when a drop of human blood is examined under the microscope.

## Etymology
From Latin nummulus (“money”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/nummulation