essential amino acid
noun
Simple meaning
An amino acid that is required by animals but that they cannot synthesize.
Pronunciation
Say it like this:
ihsehnshuhluhmeenohasuhdSay the bold part a little louder.
IPA pronunciation (US)
ɪˈsɛnʃələˈminoʊˈæsəd
This word is pronounced essentially the same in American and British English, so one transcription covers both.
IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.
Definition
Everyday modern meanings first, grouped by part of speech.
noun
biochemistry
An amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet
biochemistry
One of the nine naturally occurring amino acids that the human body cannot synthesize, and so must be provided by dietary protein.
Word Aura™
How this word commonly comes across.
This meaning: An amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet
Used this way, essential amino acid is a specialist word that usually carries little praise or criticism of its own. It turns up most in technical or specialist writing contexts.
- Emotional tone
- Neutral
- Formality
- Specialist/technical
- Intensity
- Not strongly marked
- How common
- Specialized
- Connotation
- Clinical and technical
- Usage feel
- Technical and specialized
Where it naturally appears
- Technical/specialist writing
Usage note
In general conversation this sense usually needs explaining — outside its field, people reach for a plainer word.
Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.
Share your sentence
Ask Vocabaura
Understand the word your way.
What Does It Mean Here?
Words can change meaning depending on context.
Use it yourself
Keep learning “essential amino acid” by choosing the kind of practice you need next.
- Practice sentence writingWrite sentences with vocabulary and get instant feedback.
- Practice in contextAnswer short vocabulary questions drawn from real situations.
- Review vocabularyTest your recall and strengthen words over time.
- Practice typingType vocabulary from meanings, examples and other prompts.
Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.