Activity An operation on a network which takes time (or other resources) and is indicated by an arrow.
Actual cost of work performed (ACWP) Cumulative actual cost (in money or manhours) of work booked in a specific period.
Actual hours The manhours actually expended on an activity or contract over a defined period.
Adjudication Procedure for resolving a dispute by appointing an independent adjudicator.
Advance payment bond Bond given in return for advanced payment by client.
Analytical estimates Accurate estimate based on build up of all material and labour requirements of the project.
AoN Activity on Node.
AoA Activity on Arrow.
Arbitration Dispute resolution by asking an arbitrator to make a decision.
Arithmetical analysis ...