ˌ ̷ ̷ ̷ ̷ˈlaksə̇s noun
( plural trophallax·es -kˌsēz)
Etymology: New Latin, from troph- + Greek allaxis barter, from allassein to change, from allos other — more at else
: exchange of food (as from salivary or other glands) between organisms : the association of different organisms and especially social insects on the basis of such a unilateral or mutual exchange