| chiral | <chemistry> A term used to describe a molecule which, in a given configuration, cannot be superimposed on its mirror image. This is in contrast to achiral molecules which can be superimposed on their mirror images. The two mirror image versions of the molecule are known as levo (left-handed), abbreviated L, or dextro (right handed), abbreviated D, depending on which way they rotate polarized light. (05 Jan 1998) |
|---|---|
| chiral centre | <chemistry> A tetrahedral carbon atom that bears four different substituents. (09 Jan 1998) |
| chiral compound | <chemistry> A molecule that has an asymmetric centre and can be found in twonon-superimposable mirror-image forms (enantiomers). (05 Jan 1998) |
| chiral crystal | An enantiomorphic, dyssymmetric, optically active crystal. (05 Mar 2000) |
| chiral synthesis | <chemistry> The production of chiral compounds in only one enantiomer, or handedness. (See chirality) (05 Jan 1998) |
| chirality | <chemistry> The chemical version of left-handed and right-handed. While some molecules have the same atoms tied up in the same way, they are not physically the same because of their orientation. Such a chemical is called a chiral compound, and the two (or more) forms are called enantiomers (or optical isomers) of each other. Nearly all of the molecules that make up living systems are chiral. (05 Jan 1998) |
| chirarthritis | An obsolete term for inflammation of the joints of the hand. Synonym: chirarthritis. Origin: cheir-+ arthritis (05 Mar 2000) |
| chiro- | Chir- The hand. See: cheiro-. Origin: G. Cheir, hand (05 Mar 2000) |
| chirobrachialgia | An obsolete term for pain and paresthesia in the hand and arm. Synonym: chirobrachialgia. Origin: cheiro-+ G. Brachion, arm, + algos, pain (05 Mar 2000) |
| chirognostic | Able to distinguish between right and left, as of the hands or of which side of the body is touched. Synonym: chirognostic. Origin: cheiro-+ G. Gnostikos, perceptive (05 Mar 2000) |
| chirokinesthesia | The subjective sensation of movement of the hands. Synonym: chirokinesthesia. Origin: cheiro-+ G. Kinesis, movement, + aisthesis, sensation (05 Mar 2000) |
| chirology | The use of the finger alphabet in talking. Synonym: cheirology, chirology, chirology. Origin: dactylo-+ G. Logos, word (05 Mar 2000) |
| chironomidae | A family of the order diptera. Salivary glands of the genus chironomus are used in studies of cellular genetics and biochemistry. (12 Dec 1998) |
| chiroplasty | Rarely used term for plastic surgery of the hand. Synonym: chiroplasty. Origin: cheiro-+ G. Plastos, formed (05 Mar 2000) |
| chiropodalgia | Pain in the hands and in the feet. Synonym: chiropodalgia. Origin: cheiro-+ G. Pous, foot, + algos, pain (05 Mar 2000) |