amino

The word 'amino' entered English in the late 19th century as a shortened form of 'amine', which itself was coined in the mid-19th century from 'ammonia' and the chemical suffix '-ine'. 'Ammonia' traces back to the Latin 'sal ammoniacus' (salt of Ammon), referring to a salt obtained near the temple of the Egyptian god Ammon. Thus, 'amino' carries a lineage from ancient geography and mythology into the precise language of modern chemistry, specifically denoting the presence of the crucial NH₂ group foundational to amines and amino acids.

The word 'amino' is a borrowing from the international scientific vocabulary, derived from 'amine'. It is not productively segmented into smaller, meaningful morphemes within modern English spelling. Its core is the chemical term 'amine'.