- (subjective) refers to the speaker or writer
Collins Concise English Dictionary © HarperCollins Publishers::
I /aɪ/ pron
I symbol for
- iodine
- current
- isospin
- a particular affirmative categorial statement, such as some men are married, often symbolized as SiP
Compare A, E, O1 - (Roman numeral) one
See Roman numerals
- Italy (international car registration)
I, i /aɪ/USA pronunciation
n. [countable], pl. I's or Is, i's or is.
I /aɪ/USA pronunciation pron., [nom.] I, poss. my or mine, obj. me;
pl. [nom.] we, poss. our or ours, obj. us;
n., pl. I's.
pron.
n. [countable]
I, an abbreviation of:
WordReference Random House Learner's Dictionary of American English © 2026- Linguisticsthe ninth letter of the English alphabet, a vowel.
I /aɪ/USA pronunciation pron., [nom.] I, poss. my or mine, obj. me;
pl. [nom.] we, poss. our or ours, obj. us;
n., pl. I's.
pron.
- (used as the singular subject pronoun by a speaker or writer in referring to himself or herself):I'll be happy to see you. Am I glad to see her!
n. [countable]
- Philosophythe ego;
the self:the "I'' of the narrator.
I, an abbreviation of:
- Transport, Pronounsinterstate (used with a number to designate an interstate highway):I-95.
ˈRo•man ˈnu•mer•al,
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- any of the numerals in the ancient Roman system of notation, still used occasionally. The basic symbols are I (=1), V (=5), X (=10), L (=50), C (=100), D (=500), and M (=1000).
I, i
(ī),USA pronunciation n., pl. I's or Is, i's or is.
I (ī),USA pronunciation pron., nom. I, poss. my or mine, obj. me;
pl. nom. we, poss. our or ours, obj. us;
n., pl. I's.
pron.
n.
I,
I, Symbol.
i, [Math.]
I,
i-,
-i-,
I.,
WordReference Random House Unabridged Dictionary of American English © 2026- Linguisticsthe ninth letter of the English alphabet, a vowel.
- Linguisticsany spoken sound represented by the letter I or i, as in big, nice, or ski.
- something having the shape of an I.
- a written or printed representation of the letter I ori.
- a device, as a printer's type, for reproducing the letter I ori.
I (ī),USA pronunciation pron., nom. I, poss. my or mine, obj. me;
pl. nom. we, poss. our or ours, obj. us;
n., pl. I's.
pron.
- the nominative singular pronoun, used by a speaker in referring to himself or herself.
n.
- (used to denote the narrator of a literary work written in the first person singular).
- Chemistry[Metaphys.]the ego.
- bef. 900; Middle English ik, ich, i; Old English ic, ih; cognate with German ich, Old Norse ek, Latin ego, Greek egó̄, Old Church Slavonic azù, Lithuanian aŝ, Sanskrit ahám
- See me.
I,
- Transport, Pronounsinterstate (used with a number to designate an interstate highway):I-95.
I, Symbol.
- the ninth in order or in a series.
- (sometimes l.c.) the Roman numeral for 1. Cf. Roman numerals.
- [Chem.]iodine.
- Biochemistryisoleucine.
- [Elect.]current.
- Philosophy[Logic.]See particular affirmative.
i, [Math.]
- Also called imaginary unit. the imaginary number &fullradicoverminus1;
. - a unit vector on the x-axis of a coordinate system.
I,
- Symbol, Physics. isotopic spin.
i-,
- var. of y-.
-i-,
- the typical ending of the first element of compounds of Latin words, as -o- is of Greek words, but often used in English with a first element of any origin, if the second element is of Latin origin:cuneiform; Frenchify.
I.,
- Independent.
- Island;
Islands. - Isle;
Isles.
- imperator.
- incisor.
- interest.
- Grammarintransitive.
- island.
- isle;
isles.
Ro′man nu′merals,
- the numerals in the ancient Roman system of notation, still used for certain limited purposes, as in some pagination, dates on buildings, etc. The common basic symbols are I (=1), V (=5), X (=10), L (=50), C (=100), D (=500), and M (=1000). The Roman numerals for one to nine are: I, II, III, IV, V, VI, VII, VIII, IX. A bar over a letter multiplies it by 1000;
thus, X̄ equals 10,000. Integers are written according to these two rules: If a letter is immediately followed by one of equal or lesser value, the two values are added;
thus, XX equals 20, XV equals 15, VI equals 6. If a letter is immediately followed by one of greater value, the first is subtracted from the second;
thus, IV equals 4, XL equals 40, CM equals 900. Examples: XLVII(=47), CXVI(=116), MCXX(=1120), MCMXIV(=1914). Roman numerals may be written in lowercase letters, though they appear more commonly in capitals.
- 1725–35
Collins Concise English Dictionary © HarperCollins Publishers::
i, I /aɪ/ n ( pl i's, I's, Is)
- the ninth letter and third vowel of the modern English alphabet
- any of several speech sounds represented by this letter, in English as in bite or hit
- something shaped like an I
- (in combination): an I-beam
i symbol for
- the imaginary number √–1
Collins Concise English Dictionary © HarperCollins Publishers::
I. abbreviation for
- International
- Island or Isle
'I' also found in these entries (note: many are not synonyms or translations):
A
- Abbas I
- Abdullah
- Abigail
- about
- above
- absolute value
- access
- accident
- ack-ack
- actually
- adage
- admittedly
- Æthelred I
- afraid
- age
- Ahab
- ain't
- Aisne
- Alaric
- Albert I
- Aldington
- Alexander I
- Alexander II
- Alexander I Island
- Alexandra
- alexandrite
- Alexandroúpolis
- Alexius I Comnenus
- all
- Allies
- Almodóvar
- am
- amplitude
- Angelou
- Anne of Denmark
- another
- answer
- anticipate
- Antigonus I
- any
- Anzac
- applaud
- Arc de Triomphe
- argue
- Armageddon
- Armistice Day
- around
- Artaxerxes I
- as
