Hi Hamilton, this is a dictionary definition of "precondition"
Noun- precondition - an assumption on which rests the validity or effect of something else
assumption, premise, premiss - a statement that is assumed to be true and from which a conclusion can be drawn; "on the assumption that he has been injured we can infer that he will not to play"
boundary condition - (mathematics) a condition specified for the solution to a set of differential equations
provision, proviso - a stipulated condition; "he accepted subject to one provision"
2. precondition - an assumption that is taken for granted
supposal, supposition, assumption - a hypothesis that is taken for granted; "any society is built upon certain assumptions"
3. precondition - a condition that is a prerequisite
prerequisite, requirement - something that is required in advance; "Latin was a prerequisite for admission"
Verb- precondition - put into the required condition beforehand
gear up, prepare, ready, set, fix, set up - make ready or suitable or equip in advance for a particular purpose or for some use, event, etc; "Get the children ready for school!"; "prepare for war"; "I was fixing to leave town after I paid the hotel bill"
Nowadays rich people sign "a prenup" which is a set of preconditions before marriage to safeguard a person's wealth and property.