from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A sterile liquid containing proteins extracted from cultures of tubercle bacilli and used in tests for tuberculosis.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An antigen used in the diagnosis of tuberculosis
from the GNU version of the Collaborative International Dictionary of English
- n. A fluid containing the products formed by the growth of the tubercle bacillus in a suitable culture medium.
from The Century Dictionary and Cyclopedia
- n. A liquid prepared by Koch (first in 1890) from cultures of tubercle-bacillus, administered by hypodermic injection in tuberculosis as a therapeutic or diagnostic measure. Also called Koch′ s lymph, Koch's specific, and paratoloid.
- n. A ptomaïne formed by the action of the tubercle-bacillus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a sterile liquid containing a purified protein derivative of the tuberculosis bacterium; used in the diagnosis of tuberculosis
Latin tūberculum, tubercle; see tubercle + -in.(American Heritage® Dictionary of the English Language, Fourth Edition)