Definition

Referring to two identical atoms or groups that are attached to the same atom in a molecule.

Example

In organic chemistry, a geminal diol has two hydroxyl groups attached to the same carbon atom.

Conversation

Did you know that some chemicals have geminal groups attached to them?

Really? I didn't realize that could happen in molecules.

Yeah, it means there are two similar substituents on the same atom.

That's interesting! Chemistry is full of surprises.

Synonyms & Antonyms

Root Explanation

Geminal is derived from the Latin "geminus" (meaning twin or double) and the suffix "-al" (meaning pertaining to). The word "geminal" refers to something that is related to or characteristic of twins or pairs.

Memory Tip

Think of 'twins' ('geminus') to remember that 'geminal' relates to things that come in pairs or are double.

Visually Confused Words