"Parsable" means "susceptible to being parsed". The odd thing about it is that it isn't listed in most desk dictionaries. I've heard it often enough in computer circles, but just knowing that it's "parse" with a -ble suffix isn't enough to determine whether it's parsable, parseable, or parsible. ("Parseible" would be impossible.) There are people who spell it all three ways. After extensive lookups, I found that it's listed in two unabridged dictionaries as "parsable", and that also seems to be the majority opinion on the Internet.