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Lamarckism

La·marck·ism/ləˈmɑɹkɪzəm/noun

Lamarckism is spelled L-A-M-A-R-C-K-I-S-M: 10 letters and 3 syllables (La·marck·ism). It appears about once in every 55 million words in written English, the 231,291st most frequent word form (wordfreq, 2021 data). As a noun, Lamarckism means “The theory that structural variations, characteristic of species and genera, are produced in animals and plants by the direct influence of physical…” (English Wiktionary, September 2026).

How many letters and syllables are in Lamarckism?

Letters10: L-A-M-A-R-C-K-I-S-M
Syllables3: La·marck·ism
In writingabout once in every 55 million words; the 231,291st most frequent word form
Wrong spellings searchednone measured in search

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How common is Lamarckism?

Lamarckism appears about once in every 55 million words in written English, the 231,291st most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you pronounce Lamarckism?

  • UK /ləˈmɑːkɪzəm/
  • US /ləˈmɑɹkɪzəm/

Lamarckism has 3 syllables, split La·marck·ism in writing.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of Lamarckism

  • Lamarckianism

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does Lamarckism mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    The theory that structural variations, characteristic of species and genera, are produced in animals and plants by the direct influence of physical environments, and especially, in the case of animals, by effort, or by use or disuse of certain organs.

    Coordinate term: Darwinism

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Lamarckism in Spanish, French, German and Portuguese

In the sense evolutionary theory:

LanguageWords
Frenchlamarckisme
GermanLamarckismus
Portugueselamarckismo
Spanishlamarckismo

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does Lamarckism come from?

Internationalism, from Lamarck (i.e. its proponent Jean-Baptiste Lamarck) + -ism.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after Lamarckism