Definition of a kiss Prof .of Economics Kiss is that thing for which the demand is aways higher than the supply. Prof. of Accountancy Kiss is a credit because it is profitable when returned. Prof. of Algebra Kiss is infinity because two divided by nothing. Prof. of Geometry Kiss is the shortest distance between two lips. Prof. of Physics Kiss is the contraction of mouth due to the expansion of the heart. Prof. of Chemistry Kiss is the reaction of the interaction between two hearts. Prof. of Zoology Kiss is the interchange of salivary bacteria. Prof. of Physiology Kiss is the juxtaposition of two orbicularisoris muscles in the state of contraction. Prof. of Dentistry Kiss is infectious and antiseptic. Prof. of Philosophy Kiss is the persecution for the child, ecstasy for the youth and homage for the old. Prof. of English Kiss is a noun that is used as a conjunction, it is more common than proper, it is spoken in the plural and it is applicable to all. Prof. of Architecture Kiss is a process which builds a solid bond between the two dynamic objects. Prof. of Comp.Science What is a kiss? It seems to be an undefined variable