| excyclotropia | A cyclotropia in which the upper poles of the corneas are rotated outward (laterally) relative to each other. Origin: ex-+ cyclo-+ G. Trope, a turning (05 Mar 2000) |
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| excyclovergence | Rotation of the upper pole of each cornea outwards. Origin: ex-+ cyclo-+ L. Vergo, to bend, incline (05 Mar 2000) |
| excystation | Removal from a cyst; denoting the action of certain encysted organisms in escaping from their envelope. (05 Mar 2000) |