directrix (dÉªËrÉktrÉªks; daÉª-) n. 1. (Mathematics) geometry a fixed reference line, situated on the convex side of a conic section, that is used when defining or calculating its eccentricity. 2. (Professions) a directress [C17: New Latin, feminine of director] diâ¢recâ¢trix (dÉªËrÉk trÉªks, daÉª-)
e-Visa [edit]. Turkish e-visa can be obtained prior to arrival or on arrival (for a higher cost). Citizens of these countries are eligible to apply for a multiple entry e-Visa which allows to stay up to 90 days (unless otherwise stated):1  Antigua and Barbuda. 2  Armenia #. - Countries whose citizens are allowed to enter Turkey with their expired passports (up to 5 years). 3 - Allowed to enter Turkey with their passports or ID cards expired within the last year. Turkish e-visa can be obtained prior to arrival or on arrival (for a higher cost).
Holders of official and diplomatic passports on official business must obtain a visa from a Turkish embassy or consulate before arrival in Turkey. All travelers planning to stay more than three months for any purpose are required to obtain a visa from a Turkish embassy or consulate.Such travelers must also apply for a residence/work permit or Turkish ID card within the first month of their arrival in Turkey.he new regulation will not make any changes to the visa requirements for travel to Turkey but it will affect how long U.S. Citizens can remain in Turkey. The new regulation affects all foreigners who travel to Turkey.