any one of a number of individual efforts in a common endeavor; "I am proud of my contribution to the team's success"; "they all did their share of the work"
act of giving in common with others for a common purpose especially to a charity
a writing for publication especially one of a collection of writings as an article or story
an amount of money contributed; "he expected his contribution to be repaid with interest"
a voluntary gift (as of money or service or ideas) made to some worthwhile cause
an official form on which a request in made; "first you have to fill out the requisition"
the act of requiring; an authoritative request or demand, especially by a military or public authority that takes something over (usually temporarily) for military or public use
make a formal request for official services
demand and take for use or service, especially by military or public authority for public service
a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it; "the sums of the distances from the foci to any point on an ellipse is constant"