ScienceAugust 17, 2026

aliphatic

al-uh-FAT-ik

Definition

Relating to or denoting organic compounds in which carbon atoms form open chains, rather than aromatic rings.

Etymology

Derived from the Greek word 'aleiphar', meaning 'fat' or 'oil', because early identified compounds of this type were first isolated from fats.

In the news

The article uses 'aliphatic' to describe one of the specific chemical functional groups identified in the freshly ejected ice grains from Enceladus, helping scientists expand their understanding of the moon's complex organic composition.

Enceladus sprays water, phosphates, molecular hydrogen and complex organics straight out of its buried ocean — and a 2025 analysis found previously unseen organic compounds in freshly ejected ice, adding still more steps to the chemical pathways that c

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ScienceBlog.com

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