acidity
B2Formal (technical contexts), neutral (general). Often used in scientific, culinary, and environmental domains.
Definition
Meaning
The quality or state of being acidic; the level of acid present in a substance.
In a figurative sense, it can describe sharpness, bitterness, or causticity in speech, tone, or manner.
Linguistics
Semantic Notes
Primarily a mass noun referring to a measurable property (pH). Its figurative use, while established, is less frequent and carries a negative connotation of harshness.
Dialectal Variation
British vs American Usage
Differences
No significant difference in core meaning or usage. Spelling and pronunciation are standard.
Connotations
Identical in both varieties. The figurative sense is equally literary/uncommon.
Frequency
Equally frequent in technical/scientific contexts in both BrE and AmE.
Vocabulary
Collocations
Grammar
Valency Patterns
the acidity of [NOUN]high/low/moderate acidityto reduce/increase/measure acidityVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[No common idioms directly with 'acidity'. Figurative: 'the acidity of his/her tone/remark']”
Usage
Context Usage
Business
Used in agriculture (soil management), food & beverage industry (coffee, wine quality control), and environmental reports.
Academic
Central in chemistry, biology, soil science, oceanography (ocean acidification), and food science.
Everyday
Common in discussions about food/drink (coffee, fruit, wine), home remedies (heartburn), and gardening.
Technical
Precise measurement via pH scale; critical in chemical processes, medical conditions (gastric acidity), and environmental monitoring.
Examples
By Part of Speech
verb
British English
- N/A - 'acidify' is the related verb.
American English
- N/A - 'acidify' is the related verb.
adverb
British English
- N/A - 'acidically' is rare and highly literary.
American English
- N/A - 'acidically' is rare and highly literary.
adjective
British English
- The soil is highly acidic.
- She made an acidic remark about his tie.
American English
- The coffee was too acidic for my taste.
- His review was surprisingly acidic.
Examples
By CEFR Level
- Lemons have high acidity.
- The doctor said my stomach acidity is normal.
- We need to test the soil's acidity before planting.
- High acidity in the lake is harmful to fish.
- The wine's crisp acidity balances its sweetness perfectly.
- Scientists are concerned about increasing ocean acidity.
- Her critique was delivered with a veneer of politeness, masking its underlying acidity.
- The researcher quantified the acidity of the samples using a precise pH meter.
Learning
Memory Aids
Mnemonic
Think of 'ACID-ity' – it's the 'ITY' (the quality) of being like an ACID.
Conceptual Metaphor
SHARPNESS IS ACIDITY (e.g., 'an acidic comment'). SOURNESS IS A LOW PH (e.g., 'the acidity of the lemon').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'кислотность' (correct) vs. 'кислость' (more colloquial for sour taste).
- Figurative 'acerbity' might be better translated as 'язвительность' or 'едкость', not directly 'кислотность'.
Common Mistakes
- Incorrect: 'The acidity is very acid.' (Redundant) Correct: 'The substance is very acidic.' or 'The acidity is high.'
- Confusing 'acidity' (the property) with 'an acid' (the substance).
Practice
Quiz
In which context is 'acidity' most likely used in its figurative sense?
FAQ
Frequently Asked Questions
Not exactly. Acidity (low pH) is the chemical property that often causes a sour taste. However, other factors like sweetness can mask it, so a high-acidity food might not taste intensely sour.
The direct chemical opposite is alkalinity or basicity (high pH). In terms of taste, the opposite is often sweetness or mildness.
Not literally. It can be used figuratively to describe a person's sharp, bitter, or caustic tone, humour, or writing style.
'Acidity' is an abstract noun referring to the state/degree of being acid. 'An acid' is a concrete noun, a specific chemical substance (e.g., sulphuric acid). You measure 'acidity', but you handle 'an acid'.