A1R1A1C3H4N1I1D2S1
15 points
ARACHNIDS is validvalid
ARACHNID, any of a class of segmented invertebrate animals [n]
ARACHNID, any member of the Arachnida, the large class of arthropods that includes spiders, scorpions, mites, etc. [n]
ARACHNID, any of a class of segmented invertebrate animals [n]
ARACHNID, any member of the Arachnida, the large class of arthropods that includes spiders, scorpions, mites, etc. [n]