> For the complete documentation index, see [llms.txt](https://primer2.dynamobim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://primer2.dynamobim.org/5_essential_nodes_and_concepts/5-5_dictionaries-in-dynamo.md).

# Dictionaries in Dynamo

Dictionaries represent a collection of data that is related to another piece of data known as a key. Dictionaries expose the ability to search for, delete and insert data into a collection.

Essentially, we can think of a dictionary as a really smart way to look something up.

*While dictionary functionality has been available in Dynamo for some time, Dynamo 2.0 introduces a new way of managing this data type.*

![](/files/CEKE9PRKinitUsJoeIM1)

Original image courtesy of: [*sixtysecondrevit.com*](http://sixtysecondrevit.com/2018-01-22-new-dictionary-nodes-in-dynamobim-daily-build/)