Standard Lemma guide

macdonaldite

adj · 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

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1

adj

Meaning 1

Characteristic of MacDonaldism.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An orthorhombic-dipyramidal mineral containing barium, calcium, hydrogen, oxygen, and silicon.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Someone who was loyal to Ramsay MacDonald, especially after he split from the Labour Party in 1931.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From MacDonald + -ite after Ramsay MacDonald, founder of the British Labour Party.

From MacDonald + -ite after Gordon A. MacDonald, a volcanologist at the University of Hawaii.