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Acid Maw
From Warhammer 40k - Lexicanum
Acid Maw is a Tyranid biomorph exhibited through a Tyranid creature's jaws continuously dripping with acidic bile powerful enough to dissolve through ceramite.[1] Some creatures also have a powerful tongue dripping with corrosive acids that can be used to snare prey and bring them in for consumption and digestion while leaving other limbs free for other tasks.[2]
Sources
- 1: Codex: Tyranids (5th Edition), pg. 49
- 2: Codex: Tyranids (4th Edition), pg. 32