phtha·​lo·​cy·​a·​nine ˌtha-lō-ˈsī-ə-ˌnēn How to pronounce phthalocyanine (audio)
: a bright greenish-blue crystalline compound C32H18N8
also : any of several metal derivatives that are brilliant fast blue to green dyes or pigments

Examples of phthalocyanine in a Sentence

Recent Examples on the Web Direct Blue 199 dye Made of copper phthalocyanine and sulfur. Patrick Di Justo, WIRED, 26 Apr. 2011

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'phthalocyanine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary phthalic acid + -o- + cyanine

First Known Use

1933, in the meaning defined above

Time Traveler
The first known use of phthalocyanine was in 1933

Dictionary Entries Near phthalocyanine

Cite this Entry

“Phthalocyanine.” Dictionary, Merriam-Webster, Accessed 3 Mar. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!