Acrostically

a·cros·tic  (-krôstk, -krstk)

n.

1. 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.

2. See word square.

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[French acrostiche, from Old French, from Greek akrostikhis : akron, head, end; see acromegaly + stikhos, line; see steigh- in Indo-European roots.]

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a·crostic adj.

a·crosti·cal·ly adv.