/ˈɪl/ adjective 1 ill /ˈɪl/ adjective Learner's definition of ILL 1  a  : not well or healthy : sick or unhealthy a chronically/critically/terminally ill patient mentally ill adults

An acute Tick-borne Arbovirus Infection causing meningoencephalomyelitis of Sheep.

Institut Max von Laue - Paul Langevin, Grenoble.

early 13c., "do evil to," from ill (adj.). Meaning "speak disparagingly" is from 1520s. Related: Illed; illing.

c. 1200, "wickedly; with hostility," from ill (adj.). Meaning "not well, poorly" also is from c. 1200. It generally has not shifted to the realm of physical sickness, as the adject [..]

c. 1200, "morally evil; offensive, objectionable" (other 13c. senses were "malevolent, hurtful, unfortunate, difficult"), from Old Norse illr "evil, bad; hard, difficult; mean [..]

(`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well; "he was ill prepared"; "it ill befits a man to be [..]

not well; not healthy

natured adj. Surly.

TCP IP port numbers 1611/udp Inter Library Loan

See: interlibrary loan.

(n) an often persistent bodily disorder or disease; a cause for complaining(adj) affected by an impairment of normal physical or mental function(adj) resulting in suffering or adversity(adj) distressi [..]

 - Initial Lamp Lumens

Persons with psychiatric illnesses or Diseases, particularly psychotic and severe Mood Disorders.

Persons with an incurable or irreversible illness at the end stage that will result in Death within a short Time. (From O'Leary et al., Lexikon: Dictionary of Health Care Terms, Organizations, an [..]

, adj. difficult. ‘That stuff’s ill to grind.’

Interlibrary loan. When a book or other item needed by a registered borrower is checked out, unavailable for some other reason, or not owned by the library, a patron may request that it be borrowed from another library by filling out an interlibrary loan request form at a service desk or on the library's Web site. Some libraries also accept IL [..]