pumice: meaning, definition, pronunciation and examples
C1Technical (geology, industry, construction), Consumer (beauty/personal care, gardening), occasionally literary.
Quick answer
What does “pumice” mean?
A very light, porous volcanic rock formed from solidified frothy lava, used especially as an abrasive for smoothing or polishing surfaces.
Audio
Pronunciation
Definition
Meaning and Definition
A very light, porous volcanic rock formed from solidified frothy lava, used especially as an abrasive for smoothing or polishing surfaces.
A substance derived from the volcanic rock (pumice powder) or a product made from it (pumice stone), used for cleaning, polishing, or in horticulture as a soil amendment. Metaphorically, can refer to a rough, abrasive tool or process for smoothing or refining.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Both use "pumice" and "pumice stone". Minor difference in typical consumer contexts: more common in UK gardening/horticulture talk; in US, perhaps slightly more associated with personal care.
Connotations
Largely neutral/technical. In consumer contexts, can have connotations of self-care (smoothing skin) or hard cleaning (removing stains).
Frequency
Low frequency in general discourse. Higher frequency in specific domains: geology, construction, beauty/personal care, gardening.
Grammar
How to Use “pumice” in a Sentence
[verb] + pumice: use, apply, rub with, grind, mine, formpumice + [verb]: forms, floats, abrades, absorbsadjective + pumice: coarse, fine, powdered, porous, volcanicVocabulary
Collocations
Examples
Examples of “pumice” in a Sentence
verb
British English
- She gently pumiced the rough skin from her heels.
- The craftsman pumices the wood surface before applying the final finish.
American English
- He pumiced the stubborn rust off the old tool.
- You can carefully pumice away the calluses.
adjective
British English
- The pumice aggregate makes the building block remarkably light.
- They used a pumice powder for the final polish.
American English
- The pumice scrub left her skin feeling smooth.
- We need a pumice-based soil mix for the succulents.
Usage
Meaning in Context
Business
In trade of construction aggregates or horticultural supplies. "We import horticultural-grade pumice for soil aeration."
Academic
In geology texts describing volcanic processes and rock types. "The pumice deposit indicated a highly explosive eruption."
Everyday
In personal care or household cleaning. "I need a new pumice stone for my feet." / "Try a bit of pumice on that stubborn limescale."
Technical
In construction (lightweight concrete), industry (abrasive blasting), or horticulture (soil amendment). "Pumice is used as a lightweight aggregate in insulating concrete blocks."
Watch out
Common Mistakes When Using “pumice”
- Pronunciation: /ˈpjuːmɪs/ (incorrect); correct is /ˈpʌmɪs/. Spelling: 'pummice' (incorrect). Countability: treating as only uncountable ('a pumice' is acceptable for a stone). Verb use: 'to pumice' is valid but rare and often replaced by 'use a pumice on'.
FAQ
Frequently Asked Questions
Pumice is a specific type of lava rock. It forms from frothy, gas-rich lava that cools rapidly, trapping bubbles. Other lava rocks (like basalt) are denser and not porous.
No, it is an abrasive and should only be used on areas of thick, hardened skin like heels, elbows, or calluses. It should not be used on sensitive or broken skin.
Because it is full of tiny air bubbles trapped during its rapid formation from volcanic froth, making it less dense than water.
Pumice is volcanic, lighter, and often finer-grained. Sandstone is a sedimentary rock, typically heavier and coarser. Pumice is preferred for finer polishing and where weight is a factor.
A very light, porous volcanic rock formed from solidified frothy lava, used especially as an abrasive for smoothing or polishing surfaces.
Pumice is usually technical (geology, industry, construction), consumer (beauty/personal care, gardening), occasionally literary. in register.
Pumice: in British English it is pronounced /ˈpʌm.ɪs/, and in American English it is pronounced /ˈpəməs/ (ˈpəm-əs). Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “(as) light as pumice”
- “to pumice away (metaphorical, rare: to abrade or wear down gradually)”
Learning
Memory Aids
Mnemonic
Imagine a PUMpkin that's ICE-light and full of holes—that's PUMICE, a light, frothy volcanic rock.
Conceptual Metaphor
ABRASION IS SMOOTHING/PURIFICATION (using a rough thing to create a smooth result); LIGHTNESS IS POROSITY.
Practice
Quiz
What is the primary characteristic that allows pumice to float?