meridian Synonyms

acme elevation tiptop pinnacle top peak height superlative summit prime golden age undertide highest zenithal zenith vertex point undern maximum tip meridiem summity autumnal equinox Antarctic Circle crowning point two-line double pica noontime high-water mark high point fastigium ne plus ultra twelve noon high noon map projection relief map contour map prime meridian line of longitude rhumb line loxodrome eight bells perihelion culmination culmen crown crest crescendo consummation climax chorographer