English Reference
noun

organizer

n.
US /ˈɔɹɡəˌnaɪzɝ/ or·ga·niz·er UK spelling organizers

  1. 01 B1 Intermediate

    a person who plans and manages the details of an event or a group.

    an individual responsible for the coordination and logistical management of public events, meetings, or social movements.

    Simple

    The lead organizer of the festival made sure every band arrived on time.

    In context

    As the primary organizer of the international conference, she had to balance the needs of three hundred delegates with a very tight budget.

  2. 02 B1 Intermediate Computing

    a notebook, app, or small computer used to keep track of your schedule and notes.

    a physical notebook or digital device designed to facilitate personal time management and information storage.

    Simple

    I wrote the appointment in my organizer so I wouldn't forget it.

    In context

    Before smartphones became ubiquitous, many professionals relied on a physical leather-bound organizer to track their daily appointments and contacts.

  3. 03 B2 Upper Intermediate

    a box or case with different sections to keep small items tidy.

    a container or receptacle, often divided into compartments, used for the systematic storage of small objects.

    Simple

    She bought a plastic organizer to keep her desk drawers neat.

    In context

    The technician used a modular organizer to ensure that the various sizes of screws and bolts remained separated during the repair process.

  4. 04 C2 Proficiency Technical Science

    a group of cells in a developing baby that tells other cells what to do.

    a region of an embryo that directs the development and differentiation of surrounding tissues.

    Simple

    Scientists studied the organizer in the embryo to see how the spine forms.

    In context

    The discovery of the embryonic organizer provided a fundamental insight into how specific cell groups signal the structural layout of a developing organism.

    inductor

From organize + -er.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B1 · Intermediate
Frequency Frequent
Updated