RE

RE

1. (international standards) ISO 3166-1 alpha-2 country code for Réunion.

   Synonym: REU (alpha-3)

See at re.

RE

2. Alternative form of re (“regarding”).

Abbreviations.

R_E

1. (astronomy) Earth radius: the radius of planet Earth, regarded as a unit of measurement.

   Synonyms: R_🜨, R_♁

2. (sum of parts) The radius of the Earth specifically.

   Synonyms: R_🜨, R_♁

RE

1. Initialism of Royal Engineers, a regiment in the British Army.
2. (rail transport) The station code of Rewari Junction railway station in India.
3. (classics) Abbreviation of Realencyclopädie der classischen Altertumswissenschaft.

RE (countable and uncountable, plural REs)

1. (computing theory, computational complexity theory) Initialism of recursively enumerable; the class of decision problems for which a “yes” answer can be verified by a Turing machine in a finite amount of time. See more at RE (complexity) on Wikipedia.Wikipedia
2. Initialism of religious education.
3. Initialism of rare earth.
4. (biochemistry, genetics) Initialism of response element.
5. Initialism of real estate.
6. Initialism of renewable energy.
7. (computing, countable) Initialism of run-time environment.
8. (computing) Initialism of reverse engineering.
9. (medicine) Initialism of reproductive endocrinologist.
   • 1997 April 21, Sheri Feldbusch, “Looking for a little guidance.”, in alt.support.pco‎^[1] (Usenet):

     I am new to this group and have not had the courage to post many messages. I just had my second/follow-up apointment with my RE today. I have only recently been diagnosed with PCO and had the routine tests, HSG, etc.. done. Today, we talked about those results and what our next plan of action is.

• (recursively enumerable): co-RE, coRE, co-RE-complete, RE-complete

• 'er, -'er, -er, E-R, E. R., E.R., ER, er, er.

RE f

1. (French politics) abbreviation of Renaissance