glutamic acid: meaning, definition, pronunciation and examples
Low-Frequency (Technical/Scientific)Scientific/Technical, Academic (Biochemistry, Nutrition, Food Science)
Quick answer
What does “glutamic acid” mean?
A non-essential amino acid (C₅H₉NO₄) that is a key building block of proteins and plays a vital role in cellular metabolism.
Audio
Pronunciation
Definition
Meaning and Definition
A non-essential amino acid (C₅H₉NO₄) that is a key building block of proteins and plays a vital role in cellular metabolism.
It is often associated with its monosodium salt form (monosodium glutamate or MSG), used as a flavor enhancer. In biochemistry, it acts as an important excitatory neurotransmitter in the central nervous system.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or pronunciation differences. Usage is identical across scientific communities.
Connotations
Neutral in scientific contexts. In public discourse, sometimes carries negative connotations due to associations with 'MSG' and perceived health concerns (e.g., 'Chinese Restaurant Syndrome'), though this is scientifically disputed.
Frequency
Equally low-frequency in both varieties, confined to specialized fields.
Grammar
How to Use “glutamic acid” in a Sentence
Glutamic acid is found in [PROTEIN/SOURCE].[SOURCE] is rich in glutamic acid.The enzyme converts [SUBSTANCE] to glutamic acid.Vocabulary
Collocations
Examples
Examples of “glutamic acid” in a Sentence
verb
British English
- [No standard verb form]
American English
- [No standard verb form]
adverb
British English
- [No standard adverb form]
American English
- [No standard adverb form]
adjective
British English
- The glutamic acid content was analysed.
- A glutamic acid derivative.
American English
- The glutamic acid content was analyzed.
- A glutamic acid receptor.
Usage
Meaning in Context
Business
Rare, except in specific industries like food manufacturing, supplements, or biotechnology (e.g., 'We source glutamic acid for our new product line.').
Academic
Common in biochemistry, neuroscience, and nutrition papers (e.g., 'The role of glutamic acid in synaptic transmission was investigated.').
Everyday
Very rare. If used, typically in discussions about food ingredients or health (e.g., 'This broth gets its savory taste from glutamic acid.').
Technical
Core term in biochemistry and food science (e.g., 'The enzyme glutamate dehydrogenase catalyzes the reversible conversion.').
Vocabulary
Synonyms of “glutamic acid”
Strong
Neutral
Weak
Vocabulary
Antonyms of “glutamic acid”
Watch out
Common Mistakes When Using “glutamic acid”
- Misspelling as 'glu*tt*amic acid'.
- Confusing it with 'glutamine' or 'glutathione'.
- Using it as a countable noun (e.g., 'a glutamic acid' is incorrect; it's uncountable).
FAQ
Frequently Asked Questions
Not exactly. Monosodium glutamate (MSG) is the sodium salt of glutamic acid. Glutamic acid is the amino acid itself, while MSG is a common food additive derived from it.
Glutamic acid is a natural, essential component of proteins and is safe for the vast majority of people. Controversy surrounds high intakes of its processed form, MSG, but extensive research has found no consistent evidence of harm from normal consumption.
It occurs naturally in high-protein foods like meat, fish, poultry, eggs, dairy products (especially Parmesan cheese), tomatoes, mushrooms, soy sauce, and seaweed (kombu).
It is the primary excitatory neurotransmitter in the vertebrate central nervous system, meaning it stimulates nerve cells to send signals. It is crucial for learning, memory, and brain plasticity.
A non-essential amino acid (C₅H₉NO₄) that is a key building block of proteins and plays a vital role in cellular metabolism.
Glutamic acid is usually scientific/technical, academic (biochemistry, nutrition, food science) in register.
Glutamic acid: in British English it is pronounced /ɡluːˌtæm.ɪk ˈæs.ɪd/, and in American English it is pronounced /ɡluˌtæm.ɪk ˈæs.ɪd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms for this technical term]”
Learning
Memory Aids
Mnemonic
Think: GLU-tamic acid provides the GLU (glue/protein building block) for your body and adds a savory GLOW to food (umami).
Conceptual Metaphor
BUILDING BLOCK (for proteins), MESSENGER (in the nervous system), FLAVOUR ENHANCER/UMAMI SOURCE (in food).
Practice
Quiz
In which of these fields is the term 'glutamic acid' LEAST likely to be commonly used?