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).
Unofficial e-visa websites â donât get caught out. Since the introduction of the new e-visa, thousands of holidaymakers have been successfully applying online for their e-visa's before travelling to Turkey.The new e-visa system has been welcomed by many online users, due to it's simplicity and easy to use interface.owever too many people have been caught out by unofficial e-visa websites and donât realise that these sites are not the official website of the Turkish Ministry of Foriegn Affairs. Many people believe they are using the correct website and mistakenly pay up to 5 times the normal price.