d-

D-

In biochemistry, a symbol used as a prefix to indicate the spatial configuration of certain organic compounds with asymmetric carbon atoms. It is used if an organic compound has a configuration about an asymmetric carbon atom analogous to that of D-glyceraldehyde (the arbitrarily chosen standard), in which the hydroxy (OH) functional group is on the right side of the asymmetric carbon atom in a Fischer projection formula.

[From dextrorotatory.]

d-

The symbol for dextrorotatory.

D, d

(di)

n., pl. Ds D's, ds d's. 1. the fourth letter of the English alphabet, a consonant. 2. any spoken sound represented by this letter. 3. something shaped like a D. 4. a written or printed representation of the letter D or d. d

d-

Biochem. Symbol. (of a molecule) having a configuration resembling the dextrorotatory isomer of glyceraldehyde: printed as a small capital, roman character (disting. from l-).

d-

Symbol. dextrorotatory; dextro- (disting. from l-).

d'

,
Pron. Spelling. do (esp. before you): How d'you like them?

'd

1. contraction of had: They'd already left. 2. contraction of would: I'd like to see it. 3. contraction of did: Where'd you go? 4. contraction of - ed: She OK'd the plan.

D

1. deep. 2. depth. 3. diopter. 4. divorced. 5. Dutch.

D

Symbol. 1. the fourth in order or in a series. 2. (sometimes l.c.) (in some grading systems) a grade or mark indicating poor or barely acceptable quality. 3. a. the second note of the ascending C major scale. b. a tonality having D as the tonic. 4. (sometimes l.c.) the Roman numeral for 500. Compare Roman numerals. 5. deuterium. 6. aspartic acid.

D.

1. day. 2. December. 3. Democrat. 4. Democratic. 5. Physics. density. 6. Deus. 7. Deuteronomy. 8. Doctor. 9. dose. 10. Dutch.

d.

1. date. 2. daughter. 3. day. 4. deceased. 5. deep. 6. degree. 7. delete. 8. Brit. pence. [< Latin denāriī] 9. Chiefly Brit. penny. [< Latin denārius] 10. Physics. density. 11. depth. 12. deputy. 13. dialect. 14. diameter. 15. died. 16. dime. 17. dividend. 18. dollar. 19. dose. 20. drachma.

d-

abbreviation for dextro- (right or clockwise); a chemical prefix indicating an enantiomer" >enantiomer that rotates the plane of polarization of a beam of light in the clockwise direction, the other enantiomer being specified as l- (for levo-). The prefixes d- and l- are now being replaced by (+)- and (−)-, respectively, especially when the prefixes d-" >d- and l-" >l- are also used; for example, l-fructose is d-(−)-fructose.

d-

chemical prefix specifying the relative configuration of an enantiomer, the mirror image configuration being specified l-" >l-. Carbohydrates are designated as d- or l-" >l- depending on their configuration at the asymmetric carbon atom most distant from the carbonyl functional group, being compared in chemical configuration to the standard substance d-glyceraldehyde. Amino acids are designated according to their configuration at the asymmetric carbon atom closest to the carbonyl group, with d-serine being the standard.

d-

Prefix indicating a chemical compound to be dextrorotatory; should be avoided when (+) or (-) could be used. Compare: l-.

d-

Prefix indicating that a chemical compound is sterically related to d-glyceraldehyde, the basis of stereochemical nomenclature. Compare: l-.

D-

d-

The symbol for dextrorotatory

d-

1. Prefix indicating a chemical compound to be dextrorotatory; should be avoided when (+) or (-) could be used.
Compare: L-2. Prefix indicating that a chemical compound is sterically related to d-glyceraldehyde, the basis of stereochemical nomenclature.
Compare: lambda

d-

Abbreviation for dextro-.

Acronym

Definition

D-➣Day of Initial Operation