camerostome
/ˈkam(ə)rəstəʊm/(also camarastome, camarostome, camerastome) Zoology
noun
In chelicerate arthropods: a sclerite that overhangs the mouth, usually formed from the fused coxae of the pedipalps.
Origin
Late 19th century; earliest use found in Ray Lankester (1847–1929), zoologist. From French camerostome, irregularly from classical Latin camera + ancient Greek στόμα mouth.