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1. An impelling or restraining force; a compulsion.
2. Joint action.
3. Ecology Any of the reciprocal actions or effects, such as symbiosis, that can occur in a community.

[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.]

co·ac′tive adj.
co·ac′tive·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(koʊˈæk tɪv)

acting together.
co•ac′tive•ly, adv.
co`ac•tiv′i•ty, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in classic literature ?
In the growth of the embryo, Sir Everard Home I think noticed that the evolution was not from one central point, but coactive from three or more points.
Coactive Design: Designing Support for Interdependence in Joint Activity.
With this in mind, six organizations Wednesday launched the TRACS Transportation Coactive, to gather expertise from different transport stakeholders and academics and create a "sustainable transportation plan" to present to Cabinet.
The majority of these studies have been conducted in coactive team/group contexts where the overall performance of teams is dependent upon the summation of individual performances (but where no specific interaction between team members is necessary: e.g., a swimming relay race).
More specifically, Coactive and bidirectional relations involving genetic, neural, social, and cultural all exert an impact upon the individuals' behaviour (Gottlieb, 2007).
The solid-state Blighter passive electronically scanned array (PESA) radar detects small and slow-moving targets - even in cluttered environments - due to the radar's coactive frequency modulated continuous wave (FMCW) Doppler fast-scan processing.
[22] tested coactive neurofuzzy inference system which combines fuzzy model and neural network in permeability prediction in a tight gas reservoir and gained convincing results.
Parthiban and Subramanian [27] developed a coactive neurofuzzy inference system (CANFIS) for prediction of heart diseases.
For example, performance in interactive team sports has been gauged using win-loss records (34,58), and in a coactive sport using individual golf scores (60).
This is confirmed by the acceptance of the alternative hypothesis which says that there is a significant relationship between coactive process and social dialogue (chi-square value 77.143; table value 9.49).