Sentence:  As a result of this verbal pact, the Trinity consists of three equal <WSD>"hypostaseis</WSD>" in one "ousia": three equal Persons (Father, Son, Holy Spirit) sharing one Essence or Substance (Trinity or Godhead). 
Meaning of the word marked with <WSD> tags:  The essential person, specifically the single person of Christ (as distinguished from his two ‘natures', human and divine), or of the three ‘persons' of the Trinity (sharing a single ‘essence'). (from 16th c.)