English Reference

Word

amino

US/əˈminoʊ/

UK/ɐmˈiːnəʊ/

Definitions

01amino acid

C1 · Science

n. a short way of saying 'amino acid', which is a small part of a protein.

n. a common shorthand for an amino acid, particularly in the context of nutrition or biochemistry.

“Athletes often take aminos to help their muscles recover after a hard workout.”

“The supplement contains a balanced profile of essential aminos that the body cannot produce on its own.”

Technical · Informal

Usage

Often used in the plural form 'aminos' when referring to dietary supplements.

Synonyms

amino acid

02relating to an amine

C2 · Science

adj. describes a specific chemical group found in many organic molecules.

adj. relating to or containing the amine functional group (-NH2) within a molecule.

“The amino group is a key part of the molecule's structure.”

“The chemical properties of the compound are largely determined by the presence of the amino functional group attached to the carbon chain.”

Technical

Real-World Examples

“Software such as AlphaFold can predict the 3D structure of proteins from their amino acid sequences.”
Phys.org · 16 Aug 2026
“A rare meteorite that crashed through a New Jersey roof contains evidence of ancient salty fluids, organic compounds, and amino acids from a primitive asteroid.”
ScienceDaily · 8 Aug 2026

Etymology

From the prefix amino-, from amine, from ammonia + -ine.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Collocations

amino acidsamino acid

Word family

amineNounaminoNoun

This entry

Level
C1 · Advanced
Frequency
Frequent
Updated

Scan code

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English Reference