Formal:
* Taludtod na may titik na bumubuo ng salita (literally, "Verse with letters that form a word")
* Taludtod na may titik na nagbibigay ng salita (literally, "Verse with letters that give a word")
Informal:
* Tula na may titik na bumubuo ng salita (literally, "Poem with letters that form a word")
* Tula na may titik na nagbibigay ng salita (literally, "Poem with letters that give a word")
You can also use a more descriptive approach:
* Isang uri ng tula kung saan ang unang titik ng bawat linya ay bumubuo ng salita (literally, "A type of poetry where the first letter of each line forms a word")
Ultimately, the best way to express "acrostic" in Tagalog will depend on the specific situation and your desired level of formality.