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• amino
  amino

  adjective

  containing the amino group.
• amino-
  amino-

  a combining form used in the names of chemical compounds in which the amino group is present.

amino

¹ American  

[uh-mee-noh, am-uh-noh] / əˈmi noʊ, ˈæm əˌnoʊ /

adjective

Chemistry.

1. containing the amino group.

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amino- ² American  

1. a combining form used in the names of chemical compounds in which the amino group is present.

   aminobenzene.

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amino ¹ British  

/ əˈmaɪnəʊ, -ˈmiː- /

noun

1. (modifier) of, consisting of, or containing the group of atoms -NH 2

   amino group or radical

   amino acid

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amino- ² British  

combining form

1. indicating the presence of an amino group

   aminobenzoic acid

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amino Scientific  

/ ə-mē′nō,ăm′ə-nō′ /

1. Relating to an amine or other chemical compound that contains the group NH ₂.

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Etymology

Origin of amino¹

First recorded in 1900–05; independent use of amino-

Origin of amino-²

amine + -o-

Example Sentences

See Examples For:

amino amino-

In certain ciliates, stop codons have evolved to specify amino acids instead of terminating protein production.

From Science Daily ● Oct. 8, 2026

For example, amino acid molecules, the building blocks of proteins, exist as two forms that are each other's mirror image.

From BBC ● Oct. 7, 2026

Like hands, all amino acids exist as two mirrored variants, but only one of them is found in the proteins in the body's cells.

From Barron's ● Oct. 7, 2026

Peptides are short chains of amino acids that can act as signaling messengers that might, for instance, tell the body to produce more growth hormone or repair tissue.

From The Wall Street Journal ● Oct. 6, 2026

Proteins are made of chains of amino acids.

From "The Gene" by Siddhartha Mukherjee

Boiling with dilute mineral acids, or baryta water, decomposes albumins into carbon dioxide, ammonia and fatty amino- and other acids.

From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg

If β-naphthylamine and β-naphthol be reduced, tetrahydro products are obtained in which the amino- or oxy-bearing half of the molecule becomes aliphatic in character.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" by Various