Acrostic Definition

ə-krôstĭk, ə-krŏstĭk

noun

A poem or series of lines in which certain letters, usually the first in each line, form a name, motto, or message when read in sequence.

American Heritage

A verse or arrangement of words in which certain letters in each line, such as the first or last, when taken in order spell out a word, motto, etc.

Webster's New World

A poem or other text in which certain letters, often the first in each line, spell out a name or message.

Wiktionary

A particular kind of word puzzle: its solutions form an anagram of a quotation, and their initials often form its author.

Wiktionary

Synonyms:

adjective

Of or like an acrostic.

Webster's New World

Other Word Forms of Acrostic

Singular:

acrostic

Plural:

acrostics

French acrostiche from Old French from Greek akrostikhis akron head, end acromegaly stikhos line steigh- in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition
From Ancient Greek ἀκροστιχίς (akrostikhis).

From Wiktionary