Similar words: cathedral, down the drain, go down the drain, unscathed, excavate, excavator, excavation, redraft. Meaning: [‚ekskə'θiːdrə] 
adv. with the full authority of the office.
adv. with the full authority of the office. 
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(1) The Pope was speaking ex cathedra.
(2) The pope must speak ex cathedra for an encyclical to be infallible.
(3) Pronouncements made Ex Cathedra do not have any great effect on the conversation – unless the individual making the pronouncement is greatly trusted, and is willing to engage in conversation.
(4) Statements by a pope that exercise papal infallibility are referred to as solemn papal definitions or ex cathedra teachings.
(5) The pope was declared to be infallible when he speaks ex cathedra on matters of faith and morals with the intention of binding the whole church.
More similar words: cathedral, down the drain, go down the drain, unscathed, excavate, excavator, excavation, redraft, bedraggled, ephedrine, polyhedron, octahedron, tetrahedron, dodecahedron, at the drop of a hat, breathed, wreathed, unsheathed, would rather do, Cath, to the death, scathe, excommunicate, catheter, excommunication, Catholic, scathing, decathlon, catharsis, cathartic.