from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An impelling or restraining force; a compulsion.
- n. Joint action.
- n. Ecology Any of the reciprocal actions or effects, such as symbiosis, that can occur in a community.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. force; compulsion, either in restraining or impelling
from the GNU version of the Collaborative International Dictionary of English
- n. Force; compulsion, either in restraining or impelling.
from The Century Dictionary and Cyclopedia
- n. Force; compulsion, either in restraining or in impelling.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. act of working jointly
Middle English coaccioun, from Latin coāctiō, coāctiōn-, a collecting, from coāctus, past participle of cōgere, to collect, condense; see coagulum. Senses 2 and 3 : co- + action.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin coactio. (Wiktionary)