Meaning of Y in English

Y

I. ˈwī noun

( plural y's or ys ˈwīz)

Usage: often capitalized, often attributive

1.

a. : the 25th letter of the English alphabet

b. : an instance of this letter printed, written, or otherwise represented

c. : a speech counterpart of orthographic y (as y in yard, my, city, or Swedish fyr )

2. : a printer's type, a stamp, or some other instrument for reproducing the letter y

3. : someone or something arbitrarily or conveniently designated y: as

a. : the 25th in order or class

b. : the 24th in order or class when j is not used

c. : the 22d in order or class when j, v, and w are not used

d. : the second in order or class when x is made the first

4. : something having the shape of the letter Y: as

a. : a forked holder to support the telescope of a leveling instrument or the axis of a theodolite : wye

b. : a principal railroad track and two diverging branches arranged like the letter Y that with a cross track connecting the diverging branches are used in reversing engines or trains

c. : siamese 4

5.

a. : unknown quantity 1

b. : y-coordinate

II. adjective

Usage: capitalized

Etymology: abbreviation of Young (as in Young Men's Christian Association, Young Women's Christian Association, Young Men's and Young Women's Hebrew Association )

: of or relating to the Young Men's Christian Association, the Young Women's Christian Association, or the Young Men's and Young Women's Hebrew Association

III. abbreviation

Usage: often capitalized

1. yard

2. year

3. yellow

4. yen

5. yeoman; yeomanry

6. younger; youngest

7. your

IV. symbol

1. unknown quantity

2. an ordinate

3. capitalized admittance

4. capitalized yttrium

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.