Latin Small Letter Y With Macron
HTML Entity Browser Test:

U+0233 is the Unicode hex value of the character Latin Small Letter Y With Macron, which is categorized as "lowercase letter" in the Unicode 6.0 character table.

In addition, U+0233 is a composite character comprising of one or more other Unicode characters modified or combined.

Unicode Character Information
Unicode Hex U+0233
General Category Lowercase Letter [Code: Ll]
Canonical Combining Class 0
Bidirectional Category L
Decomposition Mapping 0079 0304
Mirrored N
Uppercase Version U+0232
Titlecase Version U+0232
Unicode Character Encodings
Latin Small Letter Y With Macron HTML Entity ȳ (decimal entity), ȳ (hex entity)
Windows Key Code Alt 0563 or Alt +02331
Programming Source Code Encodings Python hex: u"\u0233", Hex for C++ and Java: "\u0233"
UTF-8 Hexadecimal Encoding 0xC8B3
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 0563) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +0233) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Latin Small Letter Y With Macron character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.