gravity cell: meaning, definition, pronunciation and examples
C2Technical / Historical
Quick answer
What does “gravity cell” mean?
An early type of primary battery (a cell that cannot be recharged) that uses gravity to keep two different liquids separated without a physical barrier.
Audio
Pronunciation
Definition
Meaning and Definition
An early type of primary battery (a cell that cannot be recharged) that uses gravity to keep two different liquids separated without a physical barrier.
In historical and technical contexts, it refers specifically to the Daniell cell, a 19th-century electrical cell where a copper sulfate solution (denser) sits at the bottom and a zinc sulfate solution (less dense) floats on top, separated by gravity. This design minimises polarization, providing a steadier current than earlier batteries.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. The term is equally archaic in both varieties.
Connotations
Connotes historical technology, 19th-century science, and foundational electrical experiments.
Frequency
Extremely low frequency in both varieties, found almost exclusively in historical or specialised technical texts.
Grammar
How to Use “gravity cell” in a Sentence
The [inventor/experimenter] constructed a gravity cell.A gravity cell consists of [two electrodes and two solutions].Vocabulary
Collocations
Examples
Examples of “gravity cell” in a Sentence
adjective
British English
- The gravity-cell design was a significant improvement.
American English
- They studied gravity-cell principles.
Usage
Meaning in Context
Academic
Used in history of science or electrical engineering courses to describe early power sources for telegraphy.
Everyday
Virtually never used.
Technical
May appear in detailed historical accounts of battery technology or in museum exhibit descriptions.
Vocabulary
Synonyms of “gravity cell”
Vocabulary
Antonyms of “gravity cell”
Watch out
Common Mistakes When Using “gravity cell”
- Using 'gravity cell' to refer to any modern battery or to a fuel cell.
- Confusing it with a 'dry cell' or 'Leclanché cell', which use a paste, not liquid layers.
FAQ
Frequently Asked Questions
No, not at all. A gravity cell is a specific, obsolete type of wet primary cell from the 19th century. Modern AA batteries are typically alkaline or lithium-based dry cells.
They were primarily used in fixed installations like telegraph networks and early scientific laboratories due to their ability to provide a steady current over long periods.
No. It is a primary cell, meaning the chemical reactions are not easily reversible. Once the materials are used up, the cell must be rebuilt or discarded.
It is named for its design: two liquid electrolytes of different densities (e.g., copper sulfate and zinc sulfate) are placed in the same container. The denser liquid remains at the bottom, and the less dense one floats on top, separated solely by gravity, eliminating the need for a porous barrier.
An early type of primary battery (a cell that cannot be recharged) that uses gravity to keep two different liquids separated without a physical barrier.
Gravity cell is usually technical / historical in register.
Gravity cell: in British English it is pronounced /ˈɡræv.ə.ti ˌsel/, and in American English it is pronounced /ˈɡræv.ə.t̬i ˌsel/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of GRAVITY holding the denser liquid down at the bottom of the CELL, keeping the two solutions apart.
Practice
Quiz
What is a key distinguishing feature of a gravity cell?