A reticulum is a netlike structure, seems good to me. Ain't you never reticulated splines?
What’s wrong with it? It just means network.
Why, what is wrong with it?
When reading fast, we tend to read first/last letters and the 'pattern' of the whole word and not really read the spelling. In this case, Reticulum is not very common or a familiar word and most folks would first read (or rather 'see') the word 'rectum'!