homogentisic acid: meaning, definition, pronunciation and examples
Very rareExclusively technical/scientific
Quick answer
What does “homogentisic acid” mean?
A phenolic acid produced as an intermediate in the metabolism of tyrosine and phenylalanine.
Audio
Pronunciation
Definition
Meaning and Definition
A phenolic acid produced as an intermediate in the metabolism of tyrosine and phenylalanine.
A compound whose accumulation in the body due to a rare genetic deficiency causes alkaptonuria, leading to ochronosis and arthritis.
Dialectal Variation
British vs American Usage
Differences
No differences in term usage. Spelling follows standard chemical nomenclature (American English may occasionally drop the 's' in 'homogentisic' based on older literature, but this is not a consistent regional distinction).
Connotations
None beyond its scientific/medical context.
Frequency
Equally rare and specialised in both varieties.
Grammar
How to Use “homogentisic acid” in a Sentence
The [noun] is deficient in homogentisic acid oxidase.Homogentisic acid [verb] in the urine.Diagnosis involves testing for homogentisic acid.Vocabulary
Collocations
Examples
Examples of “homogentisic acid” in a Sentence
adjective
British English
- The homogentisic acid pathway was disrupted.
- Homogentisic acid oxidase activity was measured.
American English
- The homogentisic acid pathway was disrupted.
- Homogentisic acid oxidase activity was measured.
Usage
Meaning in Context
Business
Not used.
Academic
Used in biochemistry, genetics, and medical literature.
Everyday
Virtually never used.
Technical
The primary context. Refers to a specific metabolite in pathways and a diagnostic marker for alkaptonuria.
Vocabulary
Synonyms of “homogentisic acid”
Neutral
Weak
Watch out
Common Mistakes When Using “homogentisic acid”
- Misspelling: 'homogentistic', 'homogenticic'.
- Mispronunciation with stress on 'ho-MO-gen' instead of '...gen-TIS-ic'.
- Using it as a countable noun (e.g., 'a homogentisic acid') – it is typically uncountable.
FAQ
Frequently Asked Questions
In normal metabolism, it is a brief intermediate. Its long-term accumulation due to genetic disease (alkaptonuria) damages connective tissues.
It causes urine to darken to a black or dark brown colour upon standing or when alkalised, a key sign of alkaptonuria.
No. It is produced internally from the breakdown of tyrosine and phenylalanine (amino acids in protein). Dietary protein restriction may slightly reduce production.
There is no cure. Management may involve pain relief for associated arthritis. The drug nitisinone can reduce homogentisic acid production.
A phenolic acid produced as an intermediate in the metabolism of tyrosine and phenylalanine.
Homogentisic acid is usually exclusively technical/scientific in register.
Homogentisic acid: in British English it is pronounced /ˌhɒmə(ʊ)ˌdʒɛnˈtɪsɪk ˈæsɪd/, and in American English it is pronounced /ˌhoʊmoʊˌdʒɛnˈtɪsɪk ˈæsɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'HOMO-GEN' (same origin/genetics) + 'TISIC' (sounds like 'tissue') + ACID → an acid from a genetic issue affecting tissues.
Conceptual Metaphor
N/A. A literal chemical term.
Practice
Quiz
Homogentisic acid is most directly associated with which condition?