Tubulated, meaning to have been fitted with a small tube-like structure, can be replaced with several synonyms to diversify your writing. "Tubed," "conduit," and "piped" all represent similar meanings as "tubulated." "Channeled," "funneled," and "directed" are also alternatives to describe the transfer or flow of something through a tube or other small structure. "Hose," "siphon," and "culvert" provide further options to convey the same idea. Using these synonyms can provide clarity and variety in your writing and can help avoid repetition of the word "tubulated" throughout your texts.