meridian Synonyms

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