fiss - meaning and definition. What is fiss
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What (who) is fiss - definition

ANIMAL DISEASE
Vaccine associated sarcoma; Vaccine induced sarcoma; Vaccine-induced sarcoma; Vaccine-associated feline sarcoma; Vaccine associated feline sarcoma; Feline vaccine-associated sarcoma; Feline vaccine associated sarcoma; Vaccine Associated Sarcoma; Vaxosarcoma; FISS; Feline injection-site sarcoma

fiss         
To undergo the process of fission, to split, esp. for atoms.
Origin: used as a replacement for the constant undergoes fission in a physics lesson, fisses, fissed and fissing are shorter and more entertaining.
The atom fisses to form two new, different atoms.
Vaccine-associated sarcoma         
A vaccine-associated sarcoma (VAS) or feline injection-site sarcoma (FISS) is a type of malignant tumor found in cats (and often, dogs and ferrets) which has been linked to certain vaccines. VAS has become a concern for veterinarians and cat owners alike and has resulted in changes in recommended vaccine protocols.

Wikipedia

Vaccine-associated sarcoma

A vaccine-associated sarcoma (VAS) or feline injection-site sarcoma (FISS) is a type of malignant tumor found in cats (and, often, dogs and ferrets) which has been linked to certain vaccines. VAS has become a concern for veterinarians and cat owners alike and has resulted in changes in recommended vaccine protocols. These sarcomas have been most commonly associated with rabies and feline leukemia virus vaccines, but other vaccines and injected medications have also been implicated.

Examples of use of fiss
1. It was not immediately clear Thursday if Fiss had been charged.
2. Another officer, Jeffrey Sheary, reported seeing Young‘s passenger, Chief Judge Jan Fiss, 64, pour out an open beer can on the road and try to hide it in his coat.