Skip to the word

Added 10 October 2026

tholus

noun

Latin root: tholus Wiktionary

noun Definition from Wiktionary (CC BY-SA). More about tholus at Wordnik → Where our words come from →

A small domical mountain or hill.
Hecates Tholus is a Martian volcano.
A round building, dome, or cupola.
Part of the apical structure of the asci of some lichen species.

Origin

From Latin tholus (“dome, rotunda”). Doublet of tholos.

From Wiktionary, via Kaikki.org (CC BY-SA)

Back to today's word