S1Y4M3B3I1O1N1S1
15 points
SYMBIONS is validvalid
SYMBION, symbiont [n]
SYMBION, (Greek) an organism living in close association with another, also SYMBIONT, SYMBIOT, SYMBIOTE [n]
SYMBION, symbiont [n]
SYMBION, (Greek) an organism living in close association with another, also SYMBIONT, SYMBIOT, SYMBIOTE [n]