What does the term 'dedendum' refer to in gear terminology?

The term 'dedendum' specifically refers to the depth of the tooth below the pitch circle of a gear. It is a critical measurement as it helps in defining how deep the gear teeth extend below the pitch circle, which is essential for the proper meshing of gears. In the context of gear design, understanding dedendum is vital to ensure that gears can operate without interference and provide the necessary strength and performance under load.

The dedendum measurement directly influences the tooth profile and can affect the gear's ability to engage with corresponding gears effectively. Thus, recognizing the significance of the dedendum is key for anyone involved in gear design and application, highlighting its importance in achieving proper gear functionality.