Definition from Wiktionary, the free dictionary
Alternative forms 
Usage notes 
Both the spellings parsable and parseable are widely used with similar frequency; the spelling parsable (without the ‘e’) is preferred in formal usage, according to the rule:
- “Verbs drop silent final -e except after c and g (e.g. movable but changeable)”
as mentioned in the OED, and used in World Wide Web Consortium standards.