1 Short description: Enlargement lymph nodes. 2  ICD-9-CM 785.6 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 785.6 should only be used for claims with a date of service on or before September 30, 2015.
Freebase (0.00 / 0 votes) Rate this definition: Hyperfocal distance. In optics and photography, hyperfocal distance is a distance beyond which all objects can be brought into an acceptable focus.
The vertices are some fixed distance a from the center. The line going from one vertex, through the center, and ending at the other vertex is called the transverse axis. The foci of an hyperbola are inside each branch, and each focus is located some fixed distance c from the center. (This means that a < c for hyperbolas.) The values of a and c will vary from one hyperbola to another, but they will be fixed values for any given hyperbola. ADVERTISEMENT.