i

noun pl. i's

1. the ninth letter of the English alphabet: via Latin from the Greek iota, a modification of the Phoenician (Semitic yodh, a hand): this letter, first dotted in the 11th cent., was not distinguished from j until the 17th cent.
2. any of the speech sounds that this letter represents, as, in English, the vowel (i) of pick, (ē) of pique, or (ī) of pike, or, when it is unstressed, (ə) as in sanity, or the semivowel (y) in boil
3. a type or impression for i or I
4. the ninth in a sequence or group
5. an object shaped like

adjective

1. of i or I
2. ninth in a sequence or group
3. shaped like

noun

1. a Roman numeral for 1 iii = 3
2. Astron. the inclination of a planet's orbit to some reference plane, as the ecliptic

1. interest
2. intransitive
3. island(s)
4. isle(s)

, the square root of negative one

noun

1. a Roman numeral for 1; placed after another Roman numeral, it adds one unit (e.g., VI = 6), and placed before another numeral, it subtracts one unit (e.g., IV = 4)
2. Educ. a grade indicating incompletion of assigned work; an incomplete

pl. we

the person speaking or writing: personal pronoun in the first person singular: I is the nominative form, me the objective, mine the possessive, and myself the reflexive and intensive; my is the possessive pronominal adjective

Etymology: ME i, ich, ih < OE ic, akin to Ger ich, Goth ik < IE base *ȇgom, orig. prob. neut. n. meaning “(my) presence here” > L ego, Gr egō, Sans ahám

noun pl. I's

the ego; the self

1. Imperator
2. Dentistry incisor
3. Independent
4. interstate
5. Island(s)
6. Isle(s)
7. Physics moment of inertia

1. Physics electric current
2. Chem. iodine