Y

/wuy/

the Y, Informal. the YMCA, YWCA, YMHA, or YWHA.

yen¹ (def. 1).

Symbol.

1. the 25th in order or in a series, or, when I is omitted, the 24th.

2. (sometimes l.c.) the medieval Roman numeral for 150. Cf. Roman numerals.

3. (sometimes l.c.) Elect. admittance.

4. Chem. yttrium.

5. Biochem. tyrosine.

* * *