green vitriol: meaning, definition, pronunciation and examples
Very LowTechnical/Historical
Quick answer
What does “green vitriol” mean?
A common historical/technical name for the chemical compound ferrous sulfate heptahydrate (FeSO₄·7H₂O), characterized by its greenish-blue crystalline form.
Audio
Pronunciation
Definition
Meaning and Definition
A common historical/technical name for the chemical compound ferrous sulfate heptahydrate (FeSO₄·7H₂O), characterized by its greenish-blue crystalline form.
The term refers to the specific hydrated form of iron(II) sulfate, historically used in dyeing, ink manufacture, and medicine. In broader contexts, it exemplifies the archaic practice of naming metal sulfates by color (e.g., blue vitriol for copper sulfate, white vitriol for zinc sulfate).
Dialectal Variation
British vs American Usage
Differences
No significant difference in usage or meaning. The term is equally archaic and technical in both varieties.
Connotations
Strongly historical or alchemical connotations in both varieties. May evoke images of old apothecaries, alchemy labs, or traditional crafts.
Frequency
Extremely rare in general language in both UK and US. Its use is confined to historical texts, specialized chemistry history, or niche artistic/craft contexts (e.g., historical dyeing).
Grammar
How to Use “green vitriol” in a Sentence
Green vitriol [verb]...A sample of green vitriolThe chemical compound green vitriolVocabulary
Collocations
Usage
Meaning in Context
Business
Not used in modern business contexts. Historically relevant to the trade of chemicals and dyes.
Academic
Used only in historical or philological studies of chemistry/alchemy. In modern chemistry papers, the systematic IUPAC name is used.
Everyday
Virtually never used.
Technical
Used with precise reference in history of science/technology, conservation (for iron gall ink), or historical reenactment crafts. Not in modern laboratory manuals.
Vocabulary
Synonyms of “green vitriol”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “green vitriol”
- Using 'green vitriol' in a modern chemistry report instead of 'ferrous sulfate heptahydrate'.
- Confusing it with 'blue vitriol' (copper sulfate).
- Assuming 'vitriol' in this phrase has its modern meaning of harsh speech.
FAQ
Frequently Asked Questions
As ferrous sulfate, it can be harmful if ingested in large quantities and can cause irritation. It should be handled with care, like any chemical.
Yes, but it will almost always be labelled as 'ferrous sulfate' or 'iron(II) sulfate'. It is sold for gardening (as a soil supplement), in chemical supply shops, and sometimes for crafts.
The word comes from Latin 'vitriolum' (glass), because the crystalline forms of these metal sulfates have a glassy appearance.
They are different metal sulfate hydrates: Green is iron(II) sulfate, blue is copper(II) sulfate, and white is zinc sulfate. The colour refers to the typical appearance of their crystals.
A common historical/technical name for the chemical compound ferrous sulfate heptahydrate (FeSO₄·7H₂O), characterized by its greenish-blue crystalline form.
Green vitriol is usually technical/historical in register.
Green vitriol: in British English it is pronounced /ˌɡriːn ˈvɪt.ri.əl/, and in American English it is pronounced /ˌɡrin ˈvɪ.tri.əl/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of an old, GREEN glass bottle in a VITRIOLic (corrosive) alchemist's lab, containing blue-green crystals.
Conceptual Metaphor
Not applicable; this is a concrete, technical/historical term.
Practice
Quiz
What is the modern chemical name for 'green vitriol'?