| 1. | a person who organizes, esp. one who forms and organizes a group. |
| 2. | a person whse job is to enlist employees into membership in a union. |
| 3. | a person who organizes or schedules work: You would get this job done sooner if you were a better organizer. |
| 4. | a multiple folder or, sometimes, a notebook in which correspondence, papers, etc., are sorted by subject, date, or otherwise, for systematic handling. |
| 5. | Embryology. any part of an embryo that stimulates the development and differentiation of another part. |

or·gan·ize (ôr'gə-nīz') v. or·gan·ized, or·gan·iz·ing, or·gan·iz·es v. tr.
[Middle English organisen, from Old French organiser, from Medieval Latin organizāre, from Latin organum, tool, instrument; see organ.] or'gan·iz'er n. |
organizer or·gan·iz·er (ôr'gə-nī'zər)
n.
One that organizes.
A group of cells that induces differentiation of cells in the embryo and controls the growth and development of adjacent parts through the action of an evocator. Also called inductor.