D-

Note that this entry uses the hyphen. See also D− which uses the minus sign.

See also: Appendix:Variations of "d"

Translingual

Etymology 1

From d-glyceraldehyde, old name of (+)-glyceraldehyde.

Prefix

D-

1. (chemistry) one of two mirror-image forms of an isomer (enantiomer) derived from (R)-glyceraldehyde. Written in small caps.

Usage notes

The prefixes L- and D- for enantiomers are not the same as lowercase l- and d- for levorotatory and dextrorotatory isomers, although there is substantial overlap in the physical chemistry (that is, sometimes they happen to coincide).

Antonyms

• L-

Coordinate terms

• DL-

See also

• d-
• l-
• R-
• S-
• (RS)-

Etymology 2

From deca-/deka-. From French SI metric system origins. From Latin decas, from Ancient Greek δέκα (déka, “10”).

Prefix

D-

1. (metrology) Nonstandard form of da- (“deca-”).

   Synonyms: (deca-/deka-) Da-, DA-, dk-, Dk-, DK-

   Coordinate term: d- (deci-)

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Korean

Etymology

From English D-Day.

Prefix

D‐ • (di maineoseu)

1. ... days before the big event.

   오늘은 여행 D‐2야.

   Oneur-eun yeohaeng dimaineoseu‐i-ya.

   It is 2 days before the trip today.