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mammalian

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Etymology and origin of the English word mammalian

Confidence
Established
Formation
Derivation
First attested
1813 J. M. Good et al., Pantologia
Ultimate origin
Latin mamma
Etymology tree
inherited borrowed derived
English mammal
English mammalian

Pronunciation

  • US: /məˈmeɪl.jən/, /məˈmeɪ.li.ən/[1]

Etymology

It is formed from English mammal + -ian,[2] or, in the analysis of the OED and Merriam-Webster, from the scientific Latin class name Mammalia and the English suffix -an.[3][4][5][6] Linnaeus coined the class name in the tenth edition of his “Systema Naturæ” (1758),[3][2][7] from the neuter plural of Late Latin mammālis (“of the breast”),[2][7][8] from Latin mamma (“breast”),[2][3][9] which Etymonline traces to Proto-Indo-European *mama.[2]

Earliest recorded meaning

Of, belonging to or characteristic of the Mammalia: 1813, in J. M. Good and others' Pantologia.[3][2] Dictionary.com dates the word to 1825–35,[6] and Barnhart records the noun from 1835 and the adjective only from 1851.[8]

Semantic evolution

The adjective is older than the noun mammal itself, which Etymonline and Barnhart date to 1826, as an English form of the class name, again in a work by J. M. Good;[2][8] the class name Mammalia had been used in English since 1773, in the Encyclopædia Britannica.[3][2] The noun mammalian, one of the Mammalia, followed in 1835, in W. Kirby,[3][2][8] but it has remained rare beside mammal.[4]

Timeline

  • 1813 – adjective, of or belonging to the mammals.[3][2]
  • 1835 – noun, a mammal.[3][2][8]

Meanings

Adjective

  1. Of, relating to or typical of mammals: mammalian teeth.[5][3][4]

Noun

  1. (rare) A mammal.[5][3][4]

Word family

  • nonmammalian

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i j Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  4. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  7. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  8. ^ a b c d e Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  9. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
Cite this entry

“Mammalian.” Etymologically, 1 Nov. 2026, etymologically.com/en/mammalian. Accessed 1 Nov. 2026.

Last edited on . ·