What does amin mean?
An amin — more commonly spelled 'amine' in modern usage — is an organic compound built around a basic nitrogen atom bearing a lone pair of electrons. Formally, it can be regarded as ammonia (NH₃) in which one or more hydrogen atoms have been replaced by hydrocarbon groups. Depending on how many such substitutions occur, amines are classified as primary, secondary, or tertiary, and they may be aliphatic or aromatic. This structural family is enormously important: amines occur in amino acids and proteins, in neurotransmitters such as dopamine and serotonin, in many dyes, drugs, and vitamins, and in the distinctive odours of decaying matter. Because the nitrogen lone pair readily accepts a proton, amines behave as bases and form salts with acids, a property exploited throughout pharmaceutical and industrial chemistry. The word derives from 'ammonia', reflecting the compounds' shared ancestry with that simple molecule.
nounAn amine is an organic compound and functional group containing a basic nitrogen atom with a lone pair, formally derived from ammonia by replacing one or more hydrogen atoms with hydrocarbon groups.
- An organic compound derived from ammonia in which one or more hydrogen atoms are replaced by hydrocarbon groups; also the –NH₂, –NHR, or –NR₂ functional group itself.
"The chemist identified an amin (amine) functional group in the newly synthesized compound."
"Methylamine is the simplest amin containing a single carbon substituent."
"Many neurotransmitters, such as dopamine and serotonin, belong to the class of biogenic amins."
The plural follows regular English noun formation; in standard scientific writing the plural of 'amine' is 'amines'.
"Biogenic amins play crucial roles in regulating mood and cognition."
Every protein in your body, every fragrance you smell, and many life-saving drugs owe their character to one humble structure: the amin group.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of amin
The term derives from 'ammonia', a word ultimately associated with the ancient Egyptian deity Amun through the sal ammoniac (ammonium chloride) historically obtained near his temple in Libya. Chemists coined 'amine' in the nineteenth century to describe organic derivatives of ammonia, appending the '-ine' suffix typical of chemical substances. The variant spelling 'amin' reflects the same origin but has largely given way to 'amine' in standard nomenclature. Related forms include 'amino' (the adjective describing the –NH₂ group) and 'ammonium' (the protonated cation).
Related word forms
How amin is actually used
In contemporary scientific English the standard spelling is 'amine'; 'amin' appears chiefly as a variant or in older texts. Amines are classified as primary, secondary, or tertiary depending on how many carbon groups are bonded to the nitrogen atom.
Easily confused with amin
'Amin' is a variant spelling of 'amine', which is the standard spelling in modern English chemical nomenclature.
'Amino' is the adjective form referring to the –NH₂ group, while 'amin'/'amine' names the whole class of nitrogen-containing compounds.