Standard Lemma guide

tholus

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

A small domical mountain or hill.

Definition source: English Wiktionary via Wiktextract

Topics: astronomy, geography, geology, natural-sciences

Examples

  • Hecates Tholus is a Martian volcano.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A round building, dome, or cupola.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: thole

Antonyms: none provided

3

noun

Meaning 3

Part of the apical structure of the asci of some lichen species.

Definition source: English Wiktionary via Wiktextract

Topics: biology, botany, lichenology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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

Real reading context

tholus in complete knowledge articles