Archaic. Any illness of the lungs or throat, such as asthma or a cough.
[Middle English ptisike, from Old French ptisique, from phthisicus, consumptive, from Greek phthisikos, from phthisis, wasting away, consumption. See phthisis.]
An infectious disease producing lesions especially of the lungs. consumption (no longer in scientific use), phthisis (no longer in scientific use), tuberculosis, white plague. Seehealth/sickness.