Antimeridian
Definition
The meridian located at a distance of one hundred eighty degrees from a given reference meridian, forming with it a complete circle on the Earth's surface; specifically, the Greenwich antimeridian, which largely coincides with the International Date Line. As an adjective, it describes any geometric or temporal element situated symmetrically on the opposite hemisphere.
Bilingual Equivalents
- Antimeridian
- The 180th meridian
Grammatical & Source Details
| Inflection Type | Regular neuter noun with standard technical plural adaptations in '-e' or variable descriptive adjective. |
| Formation | Scientific compound combining the spatial prefix 'anti-' (opposite to) with the standard coordinate noun 'meridian' (meridian). |
| Spelling / Pronunciation | [ˌæn.ti.mə.ˈrɪd.i.ən] |
| Source | International Register of Geodesy, Navigation Systems, and Hydrographic Charts |
Contextual Usage Examples
RO: Nava de cercetare a traversat acest antimeridian în miez de noapte, schimbând automat data calendaristică de la bord.
EN: The research vessel crossed this antimeridian in the middle of the night, automatically changing the calendar date on board.
RO: Cartograful a trasat o linie structurală pentru a evidenția relația geometrică dintre meridianul zero și antimeridianul său.
EN: The cartographer drew a structural line to highlight the geometric relationship between the prime meridian and its antimeridian.
RO: Sistemul GPS folosește valori unghiulare precise pentru a calcula poziția exactă a avioanelor în zona antimeridiană.
EN: The GPS system uses precise angular values to calculate the exact position of aircraft within the antimeridian zone.
Idioms & Phrases
Antimeridianul Greenwich / Greenwich antimeridian
RO: Linia de longitudine aflată la 180 de grade est sau vest, care împarte Oceanul Pacific și servește ca bază pentru fusul orar global.
EN: The longitude line located at 180 degrees east or west, which splits the Pacific Ocean and serves as a baseline for the global time zone.
Traseu antimeridian / Antimeridian flight path
RO: Rută de navigație aeriană sau maritimă care traversează meridianul de 180 de grade, necesitând ajustarea jurnalului de bord.
EN: An aerial or maritime navigation route crossing the 180th meridian, requiring adjustments to the ship's logbook.
Cerc structural antimeridian / Structural antimeridian circle
RO: Marele cerc format prin unirea imaginară a unui meridian cu opusul său, divizând planeta în două emisfere perfect egale.
EN: The great circle formed by the imaginary joining of a meridian with its opposite, dividing the planet into two perfectly equal hemispheres.
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