Y

y.

yard, yards, year, years

Y.

yen, yeoman, Young Men’s, Christian Association, (Chem.) yttrium, (Elect. Eng.) admittance

Y.B.

yearbook

Y.M.C.A.

Young Men’s Christian Association

Y.M.H.A.

Young Men’s Hebrew Association

Y.P.

(Mech.) yield point

Y.W.C.A. or Y.W.

Young Women’s Christian Association

Y.W.H.A.

Young Women’s Hebrew Association

YAR

Yemen Arab Republic [Yemen (Sanaa) or North Yemen]; used for information dated before 22 May 1990 or CY91

Yaw

The angle between the axis of the projectile and the trajectory.

Yb

(Chem.) ytterbium

Yd.

yard, yards

yds.

yards

yeo.

yeomanry

Yr.

year, younger, your

yrbk.

yearbook

Yrs.

year, yours

Yt.

(Chem.) yttrium