adj. Happening at the same time as something else, especially because one thing is related to or causes the other, i.e. concurrent.
n. Something happening or existing at the same time.
the GNU version of the Collaborative International Dictionary of English
adj. Accompanying; conjoined; attending.
n. One who, or that which, accompanies, or is collaterally connected with another; a companion; an associate; an accompaniment.
The Century Dictionary and Cyclopedia
Accompanying; conjoined with; concurrent; attending: used absolutely or followed by with or to.
n. A thing that is conjoined or concurrent with another; an accompaniment; an accessory; an associated thing, quality, or circumstance.
n. A person who accompanies another; an attendant or a companion.
n. In mathematics, a form invariantively connected with a given form or system of forms.
In botany, running side by side, as bundles which are not separated by other bundles.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an event or situation that happens at the same time as or in connection with another
adj. following or accompanying as a consequence
Word Usage
"Moreover, it is concomitant, that is, under its form of pleasure or of pain, of hope, of spite, of anger, etc., it accompanies all the phases or turns of creation."