Simple Definition of re

from our Learner's Dictionary

re

1 of 2

noun

ˈreɪ

music : the second note of a musical scale

do, re, mi, fa, sol, la, ti

2 of 2

preposition

ˈreɪ

ˈriː

formal : on the subject of : regarding or concerning

—used in business and legal writing and e-mail before a word or phrase that states the subject you will be discussing

re your letter of last month

Re: Changes in procedure

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“Re.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/re. Accessed 23 Jun. 2026.

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Simple Definition of re

re

noun

preposition

Cite this Entry

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