In music notation, a thirty-second note represents one-eighth of a beat and is represented by a filled circle with a stem and three flags or beams. It is so named because it lasts for the duration of one thirty-second of a whole note. Also called a demisemiquaver.
A series of thirty-second notes on the staff looks something like this:
/\
---| /-----------------------------------------------------
|/ |\
---/-----------------|\-------*----|\|\--------------------
/| * |\ *| |\|\|\
-/-|/\--------/|-----|\----|-|-----|-|\|\|-----------------
| | | \| |/ |/| * | |\|
|--|--|-------\|----*------|/|------*--|-|-----------------
\ | | \| |/ * |
--\|_/----------------------------------*------------------
|
\|