The term 'prefix with -pod' refers to a group of words that all have the same prefix, '-pod, ' which means 'FOOT.' The crossword solutions for this term are TRI (3 letters), ARTHRO (6 letters), OCTO (4 letters), TETRA (5 letters), GASTRO (6 letters), HEXA (4 letters), and DECA (4 letters). TRI-pod refers to a three-footed object, ARTHRO-pod is an organism with jointed appendages, OCTO-pod is an eight-legged creature, TETRA-pod is a four-footed animal, GASTRO-pod is a gastropod mollusk, HEXA-pod is a six-legged insect, and DECA-pod is a ten-legged arthropod.