Langimage
English

achirality

|eɪ-kaɪ-ˈræl-ɪ-ti|

C2

/ˌeɪkaɪˈrælɪti/

not having handedness (mirror-identical)

Etymology
Etymology Information

'achirality' originates from Greek via modern scientific coinage, specifically from the Greek root 'cheir' (Greek: χείρ) meaning 'hand' and the prefix 'a-' meaning 'not'.

Historical Evolution

'achirality' changed from the adjective 'achiral' (formed by prefixing 'a-' to 'chiral'; 'chiral' was coined in the 19th century from Greek 'cheir') and eventually became the modern English noun 'achirality'.

Meaning Changes

Initially, it meant 'not having handedness' (i.e., lacking the property of being chiral); over time it has retained this technical meaning referring to absence of chirality.

Meanings by Part of Speech

Noun 1

the property of being achiral; lack of chirality — an object or molecule that is identical to its mirror image (has no handedness).

The molecule's achirality means it does not exist as non-superimposable mirror-image stereoisomers.

Synonyms

nonchiralitynonchiralness

Antonyms

chiralityhandednessenantiomerism

Last updated: 2025/10/13 23:40