Langimage
English

non-chiral

|non-chi-ral|

C1

🇺🇸

/nɑnˈkaɪrəl/

🇬🇧

/nɒnˈkaɪrəl/

mirror-superimposable (not 'handed')

Etymology
Etymology Information

'non-chiral' originates from English, specifically the prefix 'non-' (from Latin 'non', meaning 'not') combined with 'chiral', where the Greek root 'cheir' meant 'hand'.

Historical Evolution

'chiral' was coined in modern scientific English (notably used by Lord Kelvin in 1894) from Greek 'cheir' ('hand'); the compound 'non-chiral' was formed later in English by prefixing 'non-' to denote the absence of that property.

Meaning Changes

Initially the root 'cheir' referred literally to 'hand'; over time 'chiral' came to mean 'handed' in the technical sense of 'not superimposable on its mirror image', and 'non-chiral' consequently denotes the absence of that technical property.

Meanings by Part of Speech

Noun 1

the property or condition of being non-chiral; absence of chirality.

The non-chirality of the compound was confirmed by polarimetry.

Synonyms

Antonyms

Adjective 1

not chiral; lacking chirality — identical to its mirror image and superimposable on that mirror image (i.e., lacking 'handedness').

The molecule is non-chiral and therefore does not rotate plane-polarized light.

Synonyms

Antonyms

Last updated: 2025/08/26 23:09