Dirigent

The monolignol substrates are held in position by proteins called dirigents (guide proteins).[…]Lignan dirigent proteins are found in the cytoplasm, but similar dirigents have been localized in the cell walls of some plants.

One of its members is deputed in rotation to maintain continuous contact with the director or dirigents of the hospital by means of biweekly, if necessary daily, visits to the institution.

The straight line in which the vertical polar plane cuts the plane of the circle of contact is called the dirigent. As there are in general two circles of contact, there are two dirigents, and they are parallel to the diretrices.

In this case, to which Sphero-Cartesians, and all other sphero-quadrics, whose dirigents are small circles, are analogous in Spherics, the dirigent conic F must also have double contact with S.

17thC, Richard Baxter, The Life of Faith, 1838, The Practical Works of Richard Baxter, Volume 3, page 690, 6. God must then be known in his three personalities; as the Father, the Word or Son, and the Spirit. 7. And these in their three causalities; efficient, dirigent, and final.

17thC, Richard Baxter, Mr. Baxter's Dying Thoughts, 1838, The Practical Works of Richard Baxter, Volume 3, page 1012, V. I shall better know the methods and perfections of the Scripture, and all God's dirigent word and will.