olemus
ISO/IEC 2382:
tipp,
millele otseselt allub vähemalt üks muu tipp
= a node to which at least one other node is directly subordinate

ülevaateid
https://codepumpkin.com/tree-data-structure-terminologies-set-1/

https://medium.com/@kamalovotash/nodes-in-trees-data-structure-c354e98b42d5

https://en.wikipedia.org/wiki/Node_(computer_science)