I, iaɪ(n.; i.)(pl.)I's; Is, i's; is.

1. the ninth letter of the English alphabet, a vowel.

   Category: Language/Linguistics

2. any spoken sound represented by this letter.

   Category: Language/Linguistics

3. something shaped like anI.

4. Category: Printing

I^*aɪ(pron.)I; my; mine; me

1. (pron.)the nominative singular pronoun used by a speaker or writer in referring to himself or herself.

   Category: Function Word

2. (n.)(used to denote the narrator of a literary work written in the first person singular.)

3. the ego; the self.

   Category: Philosphy

^* nom.. Usage: See me.

Origin of I:

bef. 900; ME ik, ich, i; OE ic, ih; c. OHG ih, ON ek, L ego, Gk egṓ, Skt ahám

I

1. interstate (used with a number to designate an interstate highway):

   I-95.

   Category: Transportation, Usage Note

I^*

1. the ninth in order or in a series.

2. (sometimes l.c.) the Roman numeral for 1.

   Ref: Compare Roman numerals.

3. Chem. iodine.

   Category: Chemistry

4. Biochem. isoleucine.

   Category: Biochemistry

5. Elect. current.

   Category: Electricity and Magnetism

^* Symbol..

I

1. Physics Symbol. isotopic spin.

   Category: Physics

i

1. Math Symbol. the imaginary number (-1)^(1/2).

   Category: Math

2. a unit vector on the x-axis of a coordinate system.

   Category: Math

i-

1. Category: Affix

   Ref: var. of y- 6

-i-

1. cuneiform; Frenchify.

   Category: Affix

   Ref: the typical ending of the first element of compounds of Latin words, as -o- 8 is of Greek words, but often used in English with a first element of any origin, if the second element is of Latin origin:

I.

1. Independent.

2. International.

3. Island.

4. Isle.

i.

1. imperator.

2. incisor.

3. interest.

4. intransitive.

   Category: Grammar

5. island.

6. isle.