aerobic

Etymology

It is borrowed from French aérobie (“organism living only in the presence of oxygen”) with the suffix -ic.^[2][3][4][5] The French word was coined in 1863 by Louis Pasteur, of certain bacteria,^[5][4][6] from Ancient Greek ἀήρ (aḗr, “air”) and βίος (bíos, “life”),^[4][6][5] the second from Proto-Indo-European *gwei- (“to live”).^[5] The Oxford Dictionary of English and the Shorter Oxford analyse the English word as aero- with the Greek word for "life" and -ic.^[7][8] English also had aerobian and aerobious,^[5][2] and the later noun aerobe has an ending that the OED thinks was perhaps remodelled after microbe.^[2]

Earliest recorded meaning

Living, or able to live, only in the presence of oxygen: 1875, according to Etymonline and Merriam-Webster.^[5][3] The OED's first record is from 1878, in the Lancet, of the nature of an aerobe,^[2] and Barnhart's from 1884.^[4]

Semantic evolution

From an adjective describing bacteria, the word widened in 1883 to processes that take place in, or need, oxygen.^[2] In 1942 it was applied to the body's consumption of oxygen during exercise,^[2] and in 1968 the American physician Kenneth H. Cooper coined aerobics, formed like gymnastics and calisthenics,^[4] after which aerobic also meant "relating to aerobics".^[5][2] Collins now has it for things designed for aerobics, such as shoes.^[9]

Timeline

• 1875 – living only in the presence of oxygen.^[5][3] The OED dates this sense to 1878, and Barnhart to 1884.^[2][4]
• 1883 – taking place in, or requiring, oxygen.^[2]
• 1942 – relating to the body's use of oxygen during exercise.^[2]
• 1968 – relating to aerobics, the exercise system named by Kenneth H. Cooper.^[4][5]

Meanings

Adjective

1. Of an organism, living or active only in the presence of oxygen: aerobic microbes in the soil.^[9][3][2]
2. Of a process, taking place in the presence of oxygen or using it: aerobic respiration.^[3][2][8]
3. Of, relating to or caused by aerobes.^[9][3]
4. Of exercise, raising the body's demand for oxygen and so, for a time, the rate of breathing and heartbeat; relating to aerobics: an hour of aerobic training.^[3][9][2]

Word family

• aerobically
• aerobicize
• nonaerobic

Related words

• aerobe
• aerobics
• anaerobic
• aero-
• aerobian
• microbe
• biology

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
4. ^ a b c d e f g Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
5. ^ a b c d e f g h i Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
6. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
7. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
8. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
9. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins