The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of several plant proteins that bind to specific carbohydrate groups on proteins or on cell membranes and are used in the laboratory to isolate glycoproteins, to stimulate proliferation of lymphocytes, and to agglutinate red blood cells.
n. Any of a class of plant proteins that bind specific carbohydrates.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any of several plant glycoproteins that act like specific antibodies but are not antibodies in that they are not evoked by an antigenic stimulus
Word Usage
"The research published in January's Molecular Immunology, demonstrates that the introduction of the astrovirus shell also shuts down a second major trigger, dubbed the lectin pathway."