the objective case of we, used as a direct or indirect object: They took us to the circus. She asked us the way.
Informal. (used in place of the pronoun we in the predicate after the verb to be ): It's us!
Informal. (used instead of the pronoun our before a gerund): She graciously forgave us spilling the gravy on the tablecloth.

before 900; Middle English, Old English; cognate with German, Gothic uns

2, 3. See me. Unabridged


United States highway (used with a number): US 66.


Uncle Sam.
United Service.


where mentioned above.

< Latin ubi suprā


as above: a formula in judicial acts, directing that what precedes be reviewed.

< Latin ut suprā

U, u

noun, plural U's or Us, u's or us.
the 21st letter of the English alphabet, a vowel.
any spoken sound represented by the letter U or u, as in music, rule, curious, put, or jug.
something having the shape of a U .
a written or printed representation of the letter U or u.
a device, as a printer's type, for reproducing the letter U or u.


plural pronoun, possessive our or ours, objective us.
nominative plural of I.
(used to denote oneself and another or others): We have two children. In this block we all own our own houses.
(used to denote people in general): the marvels of science that we take for granted.
(used to indicate a particular profession, nationality, political party, etc., that includes the speaker or writer): We in the medical profession have moral responsibilities.
Also called the royal we. (used by a sovereign, or by other high officials and dignitaries, in place of I in formal speech): We do not wear this crown without humility.
Also called the editorial we. (used by editors, writers, etc., to avoid the too personal or specific I or to represent a collective viewpoint): As for this column, we will have nothing to do with shady politicians.
you (used familiarly, often with mild condescension or sarcasm, as in addressing a child, a patient, etc.): We know that's naughty, don't we? It's time we took our medicine.
(used in the predicate following a copulative verb): It is we who should thank you.
(used in apposition with a noun, especially for emphasis): We Americans are a sturdy lot.

before 900; Middle English, Old English wē; cognate with Dutch wij, German wir, Old Norse vēr, Gothic weis


pronoun, nominative I, possessive my or mine, objective me; plural nominative we, possessive our or ours, objective us.
the nominative singular pronoun, used by a speaker in referring to himself or herself.
noun, plural I's.
(used to denote the narrator of a literary work written in the first person singular).
Metaphysics. the ego.

before 900; Middle English ik, ich, i; Old English ic, ih; cognate with German ich, Old Norse ek, Latin ego, Greek egṓ, OCS azŭ, Lithuanian aš, Sanskrit ahám

See me.


a Burmese title of respect applicable to a man: used before the proper name. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To US
World English Dictionary
i or I (aɪ)
n , pl i's, I's, Is
1.  the ninth letter and third vowel of the modern English alphabet
2.  any of several speech sounds represented by this letter, in English as in bite or hit
3.  a.  something shaped like an I
 b.  (in combination): an I-beam
4.  dot the i's and cross the t's to pay meticulous attention to detail
I or I

symbol for
Also called: j the imaginary number √--1

I1 (aɪ)
(subjective) refers to the speaker or writer
[C12: reduced form of Old English ic; compare Old Saxon ik, Old High German ih, Sanskrit ahám]

symbol for
1.  chem iodine
2.  physics current
3.  physics isospin
4.  logic A E Compare O a particular affirmative categorial statement, such as some men are married, often symbolized as SiP
5.  Roman numeral See Roman numerals one
abbreviation for
6.  Italy (international car registration)
[(for sense 4) from Latin (aff)i(rmo) I affirm]

u or U (juː)
n , pl u's, U's, Us
1.  the 21st letter and fifth vowel of the modern English alphabet
2.  any of several speech sounds represented by this letter, in English as in mute, cut, hurt, sure, pull, or minus
3.  a.  something shaped like a U
 b.  (in combination): a U-bolt; a U-turn
U or U

symbol for
1.  united
2.  unionist
3.  university
4.  in Britain
 a.  universal (used to describe a category of film certified as suitable for viewing by anyone)
 b.  (as modifier): a U film
5.  chem uranium
6.  biochem uracil
abbreviation for
7.  text messaging you
8.  old-fashioned, informal (Brit) Compare non-U (esp of language habits) characteristic of or appropriate to the upper class

U2 (uː)
a Burmese title of respect for men, equivalent to Mr

us1 (ʌs)
1.  refers to the speaker or writer and another person or other people: don't hurt us; to decide among us
2.  refers to all people or people in general: this table shows us the tides
3.  an informal word for me : give us a kiss!
4.  when used by editors, monarches, etc, a formal word for me
5.  chiefly (US) a dialect word for ourselves : we ought to get us a car

the internet domain name for
United States

US or U.S.
abbreviation for
United States
U.S. or U.S.
abbreviation for

abbreviation for
1.  ubi supra
2.  ut supra

we (wiː)
1.  refers to the speaker or writer and another person or other people: we should go now
2.  refers to all people or people in general: the planet on which we live
3.  a.  when used by editors or other writers, and formerly by monarchs, a formal word for I
 b.  (as noun): he uses the royal we in his pompous moods
4.  informal used instead of you with a tone of persuasiveness, condescension, or sarcasm: how are we today?
[Old English wē, related to Old Saxon wī, Old High German wir, Old Norse vēr, Danish, Swedish vi, Sanskrit vayam]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

12c. shortening of O.E. ic, first person sing. nom. pronoun, from P.Gmc. *ekan (cf. O.Fris. ik, O.N. ek, Norw. eg, Dan. jeg, O.H.G. ih, Ger. ich, Goth. ik), from PIE *ego(m) (cf. Skt. aham, Hitt. uk, L. ego, Gk. ego, Rus. ja). Reduced to i by 1137 in northern England, it began to be capitalized c.1250
to mark it as a distinct word and avoid misreading in handwritten manuscripts.
"The reason for writing I is ... the orthographic habit in the middle ages of using a 'long i' (that is, j or I) whenever the letter was isolated or formed the last letter of a group; the numeral 'one' was written j or I (and three iij, etc.), just as much as the pronoun." [Otto Jespersen, "Growth and Structure of the English Language," p.233]
The form ich or ik, especially before vowels, lingered in northern England until c.1400 and survived in southern dialects until 18c. The dot on the "small" letter -i- began to appear in 11c. L. manuscripts, to distinguish the letter from the stroke of another letter (such as -m- or -n-). Originally a diacritic, it was reduced to a dot with the introduction of Roman type fonts. The basic word for "I" in Japanese is watakushi, but it is not much used. Words that boys usually use are boku (polite) or ore (OH-ray), a rougher word, which can be rude depending on the situation. Girls usually use atashi (a feminine-sounding word) or the neutral watashi, but a tomboy might use boku like boys do.

O.E. us (cognate with O.S., O.Fris. us, O.N., Swed. oss), accusative and dative pl. of we, from PIE *ns- (cf. Skt. nas, Avestan na, Hittite nash "us;" Gk. no "we two;" L. nos "we, us;" O.C.S. ny "us," nasu "our;" O.Ir. ni, Welsh ni "we, us"). The -n- is preserved in Gmc. in Du. ons, Ger. uns.

O.E. we, from P.Gmc. *wiz (cf. O.S. wi, O.N. ver, Dan. vi, O.Fris. wi, Du. wij, O.H.G., Ger. wir, Goth. weis "we"), from PIE *wei- (cf. Skt. vayam, O.Pers. vayam, Hitt. wesh "we," O.C.S. ve "we two," Lith. vedu "we two"). The "royal we" (use of plural pronoun to denote oneself) is at least as old as
"Beowulf" (c.725); use by writers to establish an impersonal style is also from O.E.; it was especially common 19c. in unsigned editorials, to suggest staff consensus, and was lampooned as such since at least 1853 (cf. also wegotism).

for historical evolution, see V. Used punningly for you by 1588 ["Love's Labour's Lost," V.i.60], not long after the pronunciation shift that made the vowel a homonym of the pronoun. As a simple shorthand (without intentional word-play), it is recorded
from 1862. Common in business abbreviations since 1923 (e.g. U-Haul, attested from 1951).

abbreviation for United States, attested from 1834.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary


  1. The symbol for the element iodine.

  2. iThe symbol for current.

U 3

The symbol for the element uranium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
i   (ī)  Pronunciation Key 
The number whose square is equal to -1. Numbers expressed in terms of i are called imaginary or complex numbers.
  1. The symbol for electric current.

  2. The symbol for iodine.

  1. Abbreviation of uracil

  2. The symbol for uranium.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Computing Dictionary

US definition

Unit Separator

us definition

The country code for the United States.
Usually used only by schools, libraries, and some state and local governments. Other US sites, and many international ones, use the non-national top-level domains .com, .edu etc.
The Free On-line Dictionary of Computing, © Denis Howe 2010
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American Heritage
Abbreviations & Acronyms
imaginary unit
  1. current

  2. ice

  3. incomplete

  4. institute

  5. intelligence

  6. interstate

  7. iodine

  8. isospin

  9. Italy (international vehicle ID)

  10. 1

up quark
  1. internal energy

  2. [residential] unit

  3. units

  4. uracil

  5. uranium

  6. you

  1. ultrasound

  2. unconditioned stimulus

  3. Uniform System

  4. United States

  5. United States [highway]

  1. Latin ubi supra (where mentioned above)

  2. Latin ut supra (as above)

  1. Uncle Sam

  2. united service

  3. United States

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences for +US
Rather, he said, his words were meant to underscore the cultural dominance of
  the us.
The word heat meaning mating season is used with on in the uk and with in in
  the us.
In this way, emotions serve to explain and organize our own actions to us.
Undisputed usage we shared the money evenly amongst the three of us.
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