# fetus papyraceus

> English word · Noun

## Definitions
1. A vanishing twin that, rather than being completely reabsorbed, is compressed by its growing twin to a flattened, parchment-like condition.

## Etymology
From fetus + Latin papȳrāceus (“made of paper”), or could be considered an entirely Latin compound, consistent with medical naming.

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