Hi I'm looking for a database where I can look up a definition for a disease term, eg term: "anxiety"

definition: "Intense feelings of nervousness, tenseness, or panic, often in reaction to interpersonal stresses; worry about the negative effects of past unpleasant experiences and future negative possibilities; feeling fearful, apprehensive, or threatened by uncertainty; fears of falling apart or losing control."

The above example is from:

http://compbio.charite.de/hpoweb/showterm?id=HP:0000118#id=HP:0000739

Is there a database which maps disease terms to disease definitions?

(ive been unable to locate a table from hop.annotations that enables the above definition to be generated)