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chiral

chiral

1 8.6
Something that is not the same as its mirror image, for example a molecule
  • adjective
  • /ˈkaɪrəl/
  • Specialized
: quiral
  • Finding a clear chiral signature in cometary organics would be evidence of a biological origin.
  • chiral molecule
  • chiral symmetry

Examples

  • Every week, Dowd produces several grams of pure chiral gossypol—a bright-yellow powder he keeps in the dark because of its light sensitivity.

    Academic text (2005)
  • Even more subtle effects may arise from drug interactions of a non-chiral drug with one that is chiral.

    Academic text (1991)
  • Different chiral forms of a drug may have different biological properties and clinical expressions.

    Academic text (1991)
  • So that means this next carbon here isn't chiral anymore, right?

  • Such molecules that have we say a handedness are called chiral, chiral from the Greek word for hand.

  • Furthermore, although there may be more than one chiral center in a molecule, only one overall sign of rotation can be measured.

    Academic text (1991)
  • The clinical implications of such chiral inversion in humans remain unclear.

    Academic text (1991)
  • Chiral molecules, like those found in DNA, are not identical to their mirror images.

  • Chemists often study chiral compounds to understand their unique properties and behaviors.

  • The term chiral is used to describe objects that cannot be superimposed on their mirror images, such as left and right hands.

Synonyms

enantiomeric
vschiral
  • Specialized
1 9.9

A molecule that is a mirror image of another but cannot be placed on top of it to match

is broader, applying to objects as well as molecules
enantiomorphic
vschiral
  • Specialized
1 9.9

A shape that is a mirror image of another but cannot match it by turning, like left and right hands

is broader, used for any object that has distinct left and right forms

Surface Forms

chiral positive

Morphology

chiral = chir + al

The word is built on a Greek combining form meaning 'hand' plus '-al', but the base is not a standalone English word and the scientific meaning is not guessable for most learners.

Etymology

Chiral comes from the Greek root cheir meaning 'hand', so think of left and right hands: they are mirror images but not the same. That's why a chiral object or molecule has 'handedness' and cannot be placed on top of its mirror image.