acrostical
/ˌækrɒˈstɪkəl/ or /ˌækroʊˈstɪkəl/Definitions
1. adjective
relating to or consisting of an acrostic.
“The acrostical poem was a clever example of wordplay.”
2. noun
a poem or other text in which the first letter of each line spells out a word or phrase.
“The professor assigned her students to create acrostical poems for the final project.”
3. verb
to write or create an acrostic.
“She acrosticalized the poem to spell out her name.”