ETYM Latin valetudinarius, from valetudo state of health, health, ill health, from valere to be strong or well: cf. French valétudinaire. Related to Valiant.
Of or relating to or characteristic of a person who is a valetudinarian.
Hypochondriac; sickly person.
Pertaining to ill-health; anxious about health.

Weak or sickly person especially one morbidly concerned with his or her health.