Meanings
nounphthalo blue (countable and uncountable, plural phthalo blues)
plural phthalo blues
- countableuncountableA bright greenish-blue crystalline synthetic pigment from the group of phthalocyanine dyes.
Synonyms & antonyms
Also see
Origin
From phthalo and blue, from phthalocyanine.
Full word history & related roots →Cite this entry
APA
phthalo blue. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/phthalo%20blue
MLA
“phthalo blue.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/phthalo%20blue. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “phthalo blue,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/phthalo%20blue.
Source: phthalo blue on Wiktionary, CC BY-SA 4.0.