'Understandable' definitions:

Definition of 'understandable'

From: WordNet
adjective
Capable of being apprehended or understood [syn: apprehensible, intelligible, graspable, perceivable, understandable]

Definition of 'Understandable'

From: GCIDE
  • Understandable \Un`der*stand"a*ble\ ([u^]n`d[~e]r*st[a^]nd"[.a]*b'l), a. Capable of being understood; intelligible. --Chillingworth. [1913 Webster]