volcanic

Etymology

It is borrowed from French volcanique,^[2][3][4][5] from volcan (“volcano”),^[3][4] which comes from Italian volcano or vulcano.^[4] Etymonline takes the French adjective from Italian vulcanico.^[2] The OED instead treats it as a variant of vulcanic remodelled after volcano, and notes that the French adjective is recorded only from 1778.^[6] All go back to Latin Vulcānus (“Vulcan, the god of fire”).^[2][3]

Earliest recorded meaning

Thrown out by a volcano, or produced by volcanoes; also, of or relating to volcanoes: 1776, in R. E. Raspe's translation of J. J. Ferber's Travels in Italy.^[6][4] Etymonline dates it 1774,^[2] and Dictionary.com to 1765–75.^[7]

Semantic evolution

Raspe's translation of 1776 already used the word of the products of volcanoes, of a region full of volcanoes, and of the geological theory that gave fire the main part in forming rocks, a sense now historical.^[6] The figurative use for passionate or explosive feelings, especially anger, is recorded from 1793, and for anything that may suddenly break out violently from 1804;^[6] Etymonline dates the figurative sense to 1854.^[2] As a noun, a volcanic rock, it appears in 1801,^[6][4] and in the plural for outbursts of rage from 1919.^[6] Keats's volcanian (1820) is a rare alternative.^[2]

Timeline

• 1776 – produced by volcanoes; relating to volcanoes; of a volcanic region.^[6][4]
• 1793 – figurative, of feelings, intensely passionate or explosive.^[6]
• 1794 – concerned with the study of volcanoes.^[6]
• 1801 – noun, a volcanic rock.^[6][4]
• 1804 – capable of sudden, violent outbreak.^[6]
• 1919 – noun, plural, outbursts of passion.^[6]

Modern meaning

Adjective

1. Of, relating to or produced by a volcano or volcanoes: volcanic ash fell on the town.
2. Having many volcanoes, or made of material thrown out by them: a volcanic island.
3. Like an erupting volcano; liable to sudden, violent outbursts: his volcanic temper.
4. (geology) Extrusive.

Noun

1. A rock formed from magma thrown out by a volcano.

Word family

• volcanically
• nonvolcanic
• unvolcanic
• volcanicity
• volcaniclastic
• volcanic cone
• volcanic ash
• volcanic bomb

Related words

• volcano
• vulcanic
• Vulcan
• vulcanize

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
3. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
4. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
5. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
6. ^ a b c d e f g h i j k l Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
7. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House