ferrocyanide
noun
fer·ro·cy·a·nide
ˌfer-ō-ˈsī-ə-ˌnīd 
1
: the tetravalent anion Fe(CN)64−
2
: a compound containing the ferrocyanide anion
especially
: the salt K4Fe(CN)6 used in making blue pigments (such as Prussian blue)
Examples of ferrocyanide in a Sentence
Recent Examples on the Web
To give just one example, compounds of iron and cyanide (ferrocyanides) have been found to be crucial for producing the nucleotide building blocks of RNA.
—
Mario Livio, Scientific American, 16 Sep. 2024
Reservoirs of such ferrocyanide salts could have undoubtedly formed on the early Earth (through iron from Earth’s crust linking up with cyanide from Earth’s atmosphere, and ferrocyanide salts precipitating out above a certain concentration).
—Mario Livio, Scientific American, 16 Sep. 2024
Bluing Liquid Bluing liquid (which contains Prussian blue, or ferric ferrocyanide, and water combined) helps keep whites sparkling white.
—Jessica Bennett, Better Homes & Gardens, 2 Aug. 2023
Bluing liquid (which contains Prussian blue, or ferric ferrocyanide, and water combined) helps keep whites sparkling white.
—Jessica Bennett, Better Homes & Gardens, 2 Aug. 2023
The ensuing reaction created a distinctive blue-hued iron ferrocyanide and eventually came to be called Prussian blue (or Berlin blue).
—Jennifer Ouellette, Ars Technica, 20 June 2022
So then, in certain kinds of lakes, ferrocyanide can accumulate over time.
—Quanta Magazine, 1 June 2022
Riepenhoff got the idea three years ago while studying cyanotypes, an old photo technique that involves placing objects on paper coated with iron and potassium ferrocyanide.
—Laura Mallonee, WIRED, 30 Aug. 2016
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Mario Livio, Scientific American, 16 Sep. 2024
Reservoirs of such ferrocyanide salts could have undoubtedly formed on the early Earth (through iron from Earth’s crust linking up with cyanide from Earth’s atmosphere, and ferrocyanide salts precipitating out above a certain concentration).
—Mario Livio, Scientific American, 16 Sep. 2024
Bluing Liquid Bluing liquid (which contains Prussian blue, or ferric ferrocyanide, and water combined) helps keep whites sparkling white.
—Jessica Bennett, Better Homes & Gardens, 2 Aug. 2023
Bluing liquid (which contains Prussian blue, or ferric ferrocyanide, and water combined) helps keep whites sparkling white.
—Jessica Bennett, Better Homes & Gardens, 2 Aug. 2023
The ensuing reaction created a distinctive blue-hued iron ferrocyanide and eventually came to be called Prussian blue (or Berlin blue).
—Jennifer Ouellette, Ars Technica, 20 June 2022
So then, in certain kinds of lakes, ferrocyanide can accumulate over time.
—Quanta Magazine, 1 June 2022
Riepenhoff got the idea three years ago while studying cyanotypes, an old photo technique that involves placing objects on paper coated with iron and potassium ferrocyanide.
—Laura Mallonee, WIRED, 30 Aug. 2016
Cite this Entry
“Ferrocyanide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferrocyanide. Accessed 18 Jul. 2025.
Copy CitationMedical Definition
ferrocyanide
noun
fer·ro·cy·a·nide
ˌfer-ō-ˈsī-ə-ˌnīd
1
: the tetravalent anion Fe(CN)64−
2
: a compound containing the ferrocyanide anion
especially
: the salt K4Fe(CN)6 used in making blue pigments (as Prussian blue)
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