Y
yard, yards, year, years    y.
yen, yeoman, Young Men’s, Christian Association, (Chem.) yttrium, (Elect. Eng.) admittance    Y.
yearbook     Y.B.
Young Men’s Christian Association     Y.M.C.A.
Young Men’s Hebrew Association     Y.M.H.A.
(Mech.) yield point     Y.P.
Young Women’s Christian Association     Y.W.C.A. or Y.W.
Young Women’s Hebrew Association     Y.W.H.A.
Yemen Arab Republic [Yemen (Sanaa) or North Yemen]; used for information dated before 22 May 1990 or CY91    YAR
The angle between the axis of the projectile and the trajectory.    Yaw
(Chem.) ytterbium     Yb
yard, yards     Yd.
yards     yds.
yeomanry     yeo.
year, younger, your     Yr.
yearbook     yrbk.
year, yours     Yrs.
(Chem.) yttrium    Yt.