Definition of hijack for English Language Learners. : 1  to stop and steal (a moving vehicle) : 2  to steal (something) from a moving vehicle that you have stopped. : 3  to take control of (an aircraft) by force.
Dictionary entry overview: What does reconstitute mean? â¢ RECONSTITUTE (verb) The verb RECONSTITUTE has 1 sense: 1. construct or form anew or provide with a new structure Familiarity information: RECONSTITUTE used as a verb is very rare.
DEFINITION of 'Reconstitution' A reevaluation of a market index that involves adding and removing stocks and re-ranking existing stocks so that the index mirrors current market capitalization and style. The Russell indexes are well known for their annual reconstitution. To reconstitute the Russell indexes, all publicly traded stocks are ranked by market capitalization. A reevaluation of a market index that involves adding and removing stocks and re-ranking existing stocks so that the index mirrors current market capitalization and style. The Russell indexes are well known for their annual reconstitution.