I. ˌva-lə-ˌtü-də-ˈner-ē-ən, -ˌtyü- noun
Etymology: Latin valetudinarius sickly, infirm, from valetudin-, valetudo state of health, sickness, from valēre to be strong, be well — more at wield
Date: 1703
: a person of a weak or sickly constitution ; especially : one whose chief concern is his or her ill health
II. adjective
Date: 1713
: of, relating to, or characteristic of a valetudinarian : sickly , weak