kyanite

1 of 2

noun (1)

ky·​a·​nite ˈkī-ə-ˌnīt How to pronounce kyanite (audio)
: an aluminum silicate mineral Al2SiO5 that occurs usually in blue thin-bladed triclinic crystals and crystalline aggregates

cyanite

2 of 2

noun (2)

cy·​a·​nite
ˈsīəˌnīt
variants or less commonly kyanite
plural -s
: a mineral Al2SiO5 consisting of an aluminum silicate occurring commonly in blue thin-bladed triclinic crystals and crystalline aggregates

called also disthene

cyanitic
¦sīə¦nitik
adjective

Word History

Etymology

Noun (1)

German Zyanit, from Greek kyanos dark blue enamel, lapis lazuli

Noun (2)

German zyanit, from zyan- cyan- + -it -ite

First Known Use

Noun (1)

1794, in the meaning defined above

Time Traveler
The first known use of kyanite was in 1794

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Cite this Entry

“Kyanite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/kyanite. Accessed 25 Jun. 2026.

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