the GNU version of the Collaborative International Dictionary of English
adj. Imparting knowledge or information.
The Century Dictionary and Cyclopedia
Imparting knowledge.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. able or tending to communicate
Word Usage
"Obviously, their head size reflected their mental capacities and her sudden unexpected appearance had overtaxed their limited abilities, both mental and communicatory."