cheirotonia

Holy Order (cheirotonia) is given by laying on the right hand only.

The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery 1840-1916 1913

The fact that cheirontonein, cheirotonia, which meant electing by show of hands, had acquired the technical meaning of ordination by imposition of hands before the middle of the third century, shows that appointment to the various orders was made by that external rite.

The Catholic Encyclopedia, Volume 11: New Mexico-Philip 1840-1916 1913

As regards the sacramental form, it may be accepted as probable that the prayer accompanying the second extension of hands (cheirotonia) is the essential form, although it is not impossible that the words spoken by the bishop during the third imposition of hands (cheirothesia):

The Catholic Encyclopedia, Volume 12: Philip II-Reuss 1840-1916 1913

God, made both able and willing to serve God and his church faithfully in the holy ministry, lieth not open to the view of men, and is only manifest to him from whom nothing can be hid; the outward calling is made up of election and ordination: that signified in Scripture by _cheirotonia_ this by _cheirothesia_ concerning which things we say with Zanchius, (1003) _Magistratus_, &c.

The Works of Mr. George Gillespie (Vol. 1 of 2) George Gillespie 1630