exordior

ex-ōrdior ōrsus, īrī, dep.,

to begin a web, lay the warp, prepare to weave: pertexe modo, Antoni, quod exorsus es: ante exorsa, the web they had begun. — Meton., to begin, commence, make a beginning: iubent exordiri ita, ut, etc.: preces, O.: Unde exordior narrare, T.: tum dicere exorsus est: de quo scribere exorsi sumus, N.: ab ipsā re: bellum ab causā tam nefandā, L.